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【Objective】Rice lodging resistance is an important trait in current rice breeding. The systematic evaluation of lodging resistance of germplasm resources is of great significance for breeding lodging-resistant varieties.【Method】200 germplasm resources in China were taken as materials, 9 traits related to lodging resistance of rice were systematically investigated, and the breeding value of these traits was evaluated by morphological clustering and path analysis.【Result】According to the lodging index, the tested materials were divided into three types: high fall-resistant type, fall-resistant type and lodging type, among which 81.5% of breeding resources had good fall-resistant ability. The correlation coefficient between stalk physical traits and lodging index of different lodging resistant germplasm resources was significantly different. The plant height, bending moment and second pitch length of restorer were positively correlated with lodging index, and the correlation coefficient between bending moment and lodging index d lodging index reached 0.789. The folding resistance of base and sheath leaf thickness were negatively correlated with lodging index, and the correlation coefficients were-0.754** and-0.659**, respectively. There was a significant positive correlation between plant height and basal segment length and lodging index, and the correlation coefficient between plant height and lodging index was 0.681**. The correlation coefficient between buckling resistance and lodging index was-0.841**.The path analysis results showed that the bending moment of the restorer line and other materials had a direct positive effect on the lodging index (Py=0.519), the plant height of the sterile line had a direct positive effect on the lodging index (Py=0.737), and the base bending force of both parents had a direct negative effect on the lodging index, with direct path coefficients of-0.331 and-0.702, respectively.【Conclusion】The lodging resistance of rice is a complex trait, and different germplasm resources have different lodging resistance characteristics. Scientific utilization of breeding resources is the key to rice lodging resistance breeding. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] The single cross of maize sister lines can increase its seed production. Because of seed production is the result of multiple agronomic traits of the parents, it is important to reveal the relative importance of each trait to yield for the selection of suitable sister lines. [Method] The relationship among 15 main agronomic traits and yields of the maize inbred line ZOL-1 sister lines was analyzed by grey correlation analysis, correlation analysis and path analysis. [Result ] Grey correlation analysis showed that the order of the influence of 15 traits on yield was rows per ear > ear diameter > kernels per row > plant height > ear length > ear height > days from emergence to silk > three leaves area near ear > bare top length = leaves per plant> days from emergence to pollen > 100-kernel weight> shelling percentage > green leaves at harvest> days from emergence to tassel. Correlation analysis showed that the traits that were significantly positively correlated with yield were kernels per row, ear length, plant height, ear diameter, rows per ear, and three leaves area near ear, the traits showing a significant positive correlation were ear height and 100-kernel weight. Path analysis showed that the direct effect of each trait on yield was kernels per row > rows per ear > 100-kernel weight > plant height > ear diameter > three leaves area near ear > days from emergence to tassel > ear length > leaves per plant > days from emergence to pollen > shelling percentage > days from emergence to silk > bare top length > ear height > green leaves at harvest. [Conclusion] Plant height, ear diameter, ear row number, and kernels per row were the main factors affecting the yield of the sister lines of the maize inbred line ZOL-1, which could be used as reference indicators for the selection of maize sister lines and hybrid hybrids. [ABSTRACT FROM AUTHOR]

[Objective]The study on the correlation between main agronomic characters and yield of Brassica juncea in Guizhou will provide theoretical guidance for breeding research. [Method] Through correlation and path analysis, the relationship between main agronomic characters and yield of 269 local B. juncea in Guizhou was studied. [Result] The number of effective pod per plant, the number of secondary effective branches, the number of pod per main inflorescence, plant height, the number of primary effective branches and the number of seeds per pod were significantly positively correlated with the yield, and the 1000-grain weight was significantly correlated with the yield. The direct path coefficient indicated the effect degree of different agronomic traits on the yield of B. juncea, which showed that whole plant effective pod number (x8) > 1000-grain weight (xlO) > plant height (xl) >secondary effective branch number (x5) > main inflorescence pod number (x7) > per pod number (x9) > branch angle (x6) > effective branch height (x2) > primary effective branch number (x4) > main inflorescence long (x3). [Conclusion] The number of effective pod per plant, secondary effective branches, pod per main inflorescence, the plant height, the number of primary effective branches and 1000-grain weight were the main factors affecting the yield. The secondary effective branch number had a great contribution to the whole plant pod number, and had a great positive effect through the whole plant pod number. Therefore, the selection of pod number and secondary effective branch number should be emphasized in high yield breeding of B. juncea. [ABSTRACT FROM AUTHOR]

[Objective] The present paper aimed to analyze the main factors affecting the yield of Brassica napus L in different regions of Sichuan province, so as to provide theoretical basis for breeding B. napus L. varieties suitable for different rapeseed producing areas in Sichuan province. [Method] Variation analysis, correlation analysis and path analysis were used to analyze the relationship between the agronomic characters and the yield of B. napus L . [Result] In Xindu, Deyang and Dazhou regions, the most variation of agronomic trait was the first branch numbers. The value was the number of seeds per siliquain Chongzhou and Mianyang regions. It was the number of effective siliqua per plant in Nanchang, Yibin, Jianyang, and Leshan regions. The least variation of agronomic traits was the plant hight, in the Xindu, Chongzhou, Jianyang, Mianyang, and Deyang regions. It was 1000-seed weight, in the Nanchang, Yibin, Leshan, and Dazhou regions. The yield of Xindu region was significant or highly significant negative correlated with the first branch numbers and the number of effective siliqua per plant But, it was significant positive correlated with the plant hight and the number of seeds per siliqua. The yield of Nanchang region was significant or highly significant positive correlated with the plant hight, the first branch numbers, and the number of effective siliqua per plant. The yield of Yibin region was highly significant positive correlated with the plant hight. The yield of Jianyang region was significant or highly significant positive correlated with the number of effective siliqua per plant and the number of seeds per siliqua. But, it was highly significant negative correlated with the 1000-seed weight. The yield of Leshan region was significant positive correlated with the number of effective siliqua per plant. There was no significant correlation between yield and main agronomic traits in Mianyang, Deyang, and Dazhou region. In Xindu region, the greatest direct path coefficient and the greatest comprehensive effects were respectively the number of seeds per siliqua and the the number of effective siliqua per plant. Those were both the number of seeds per siliqua in Chongzhou region. In Nanchong and Jianyang regions, the greatest direct path coefficient and the greatest comprehensive effects were respectively the number of seeds per siliqua and the 1000-seed weight. Those values were respectively the number of effective siliqua per plant and the first branch numbers in both Mianyang and Dazhou regions. In Deyang region, the greatest direct path coefficient and the greatest comprehensive effects were both the number of effective siliqua per plant. [Conclusion] There were differences in the coefficient of variation of main agronomic traits of B. napus L in different producing areas of Sichuan province, and there were differences in correlation with yield. The effects of yield components on yield should be fully considered in breeding, as well as the comprehensive effects of other traits. The present study provides a scientific basis for breeding B. napus L varieties suitable for different regions of Sichuan province. [ABSTRACT FROM AUTHOR]

[Objective] In order to select micro-endosperm maize with high oil content, understand the effects of quality and yield traits on oil content of micro-endosperm maize, correlation and path analysis of main quality and yield traits of micro endosperm oil maize were studied. [Method] Two micro-endosperm corn inbred lines with high oleic acid and high oil percentage and six micro-endosperm corn inbred lines with low and medium oleic acid and low and medium oil percentage were selected in this experiment, and 12 cross combinations of micro-endosperm corn were designed according to NC II, correlation and path analysis of main quality and yield traits were studied. [Result] The crude protein content of maize meal of 12 micro endosperm maize hybrid combinations were 27. 67% -33. 33%. The highest crude protein content was combination 11, and the lowest was combination 8. The oil percentage of micro endosperm maize hybrid combinations were 24. 54% - 28. 95 %. Combination 11 had the highest oil percentage, and combination 6 had the lowest oil percentage. The content of oleic acid varied from 42. 67% to 47. 80%, among which the highest was combination 8, and the lowest was combination 1. The content of linoleic acid ranged from 31.90% to 40.93%, among which the highest was combination 1, and the lowest was combination 8. The content of linolenic acid varied from 0. 64 % to 0.79%, among which the highest was combination 9, and the lowest was combination 8. Correlation analysis showed that the oil content per ear was extremely positively correlated with the kernel weight per ear and the 100 kernel weight (P < 0.01, the same as below). The kernel weight per ear was positively correlated with the 100 kernel weight There was no significantly positive correlation between the content of oleic acid and the content of crude protein and oil percentage (P > 0.05), but a significant negative correlation between the content of oleic acid and the content of linoleic acid. Path analysis results showed that the direct influence son of the five causal traits on the oil content per ear was kernel weight per ear > oil percentage > linoleic acid content > crude protein content > oleic acid content. The direct effects of kernel weight per ear, oil percentage, linoleic acid content and crude protein content were positive effects, and the direct effects of oleic acid content were minimal negative effects. [Conclusion] There was extremely positive correlation between the kernel weight per ear and the oil content per ear of the micro endosperm maize hybrid combinations, and the path coefficient of kernel weight per ear to the oil content per ear was also the maximum value, which indicated that increasing the kernel weight per ear was the best way to increase the oil content per ear of the micro endosperm maize hybrid combinations. [ABSTRACT FROM AUTHOR]

Copyright of South China Fisheries Science is the property of South China Fisheries Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Southern Agriculture is the property of Journal of Southern Agriculture and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】 In order to provide the theoretical basis for breeding of vegetable faba bean, the direct or indirect effects of major agro¬nomic traits on freshi grain yield of early-matiare and autumn-sowing faba bean and the coefficient of determination were determined.【Meth- od】Thirteen cultivars of early-mature and autumn-sowing faba bean were used to carry out the correlation and path analysis of 15 major agro¬nomic traits to 2 kinds of fresh yield.【Result】 The results showed that the coefficient of variation (c. G ) of seed per plant, pod per plant, nodesof having pods,100fresh seed weight andwidthoffreshpod were 28.57 ', 19.56', 18.56', 17.51 ' and17.39', respec¬tively. These traits could be improved by breeding or farming practices. The largest c. G. of yield was cotyledon yield followed by yeed yield. Number of effective branches, nodes of having pods, pods per plant and seed per plant had extremely significant correlation with yield of fresh pod. The rate of producing cotyledon had extremely significant correlation withi yiel(d of freshi cotyledon. Yield of fresh cotyledon and pod had significant correlation with each other. Path analysis showed that both number of effective branches, pods per plant had positive di¬rect effect and had extremely yignificant correlation with yield of fresh pod. Bothi of thiem should be the main traits in breeding programs, se¬ lection should be based on the characteristics of thie traits which we were more interested in. Rate of producing cotyledon affected cotyledon yield.【Conclusion】 Among all the yield traits, pod yield showed significantly lower variation and should be the focus of our breeding program in Yunnan province. When yield of pod was the target of breeding, number of effective branches and pods per plant should be the main se¬ lecting traits combining with nodes of having pods and seed per plant. When yield of cotyledon was the target of breeding，rate of producing cotyledon was the main selecting trait [ABSTRACT FROM AUTHOR]

Copyright of Journal of Southern Agriculture is the property of Journal of Southern Agriculture and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of South China Fisheries Science is the property of South China Fisheries Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of South China Fisheries Science is the property of South China Fisheries Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Southern Agriculture is the property of Journal of Southern Agriculture and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)