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The paper focused on assess the genetic variability and diversity of water chestnut (Eleocharis tuberosa Schulut). Genetic relation among 24 cultivars of water chestnut was analyzed by inter-simple sequence repeat (ISSR) makers. 11 polymorphism primers were selected from 100 ISSR primers. A total of 86 ISSR bands were obtained, that is, 7.8 polymorphic ban each primer pair, and 69 of them were polymorphic, the polymorphism ratio was 80.3 %. The dissimilarity coefficient of the 24 water chestnut cultivars ranged from 0.0909 to 0.6071, with an average of 0.3493. The 24 water chestnut cultivars were divided into 5 groups at the genetic distance 0. 34 by UPGMA. The results showed that narrow genetic diversity and close genetic relationship presented among 24 water chestnut cultivars, and the difference varied in part of those cultivar from different areas, and the same as RAPD analysis at prophase. [ABSTRACT FROM AUTHOR]

In this paper, the genetic diversity analyses of 23 varieties were conducted by 35 SSR primers. The result showed that 342 DNA fingerprints were obtained from 23 varieties by 35 SSR primers, of which 288 polymorphic DNA fingerprints occupied 84. 21 % of all. There were significantly resistant differences among 23 varieties with 8. 20 % - 75. 93 % for the DPR and 2. 19 - 52. 67 for the DI. Genetic similarity analysis based on SSR molecular marker showed that the genetic similarity of paired varieties ranged from 0. 614 to 0. 954, and mean was 0. 740, while that of single varieties was from 0. 686 to 0. 778. The means of genetic similarity of 11 varieties were lower than that of the total (0. 740 ), while the means of 12 varieties were higher than 0. 740. The 23 rice varieties were clustered into 5 genetic groups at 0. 75 similar coefficient. The varieties with different growth periods (the most differences reaching 11 days) were clustered into the same group, while the varieties with the same growth period were existed in different groups. [ABSTRACT FROM AUTHOR]

In this paper, Australian family test was conducted to evaluate genetic characteristics of yacheng series sugarcane parents and the effect of matching of cross. The plant height, stalk diameter, millable stalks, cane yield and brix of 41 F1 groups were studied by R sofeware, and their genetic variation, genetic variance and economic breeding value (EBV ) were analyzed. The result showed that the plant height and cane yield were restricted by additive gene and non-additive gene of parents, stalk diameter by additive gene and non-additive gene offe- male parent, brix by additive gene effect of female parent, and millable stalk by non-additive gene effect of female parent. The EBV of 17 mothers were from - 2757. 12 to 3068. 17 yuan, of which EBV of 8 mothers were above zero; The EBV of 20 fathers were from - 2334. 20 to 2337. 79 yuan, of which EBV of 12 fathers were above zero; The EBV of 41 families were from - 7276. 52 to 6173. 43 yuan, of which EBV of 20 families were above zero. Among the 17 mothers, Ya cheng71 -3 7 4, yc08-01 -10, yacheng82-96, yacheng97-46, yacheng73-226 were suggested to use in cross breeding. Among the 20 fathers, yacheng84-153, yacheng84-125, yacheng09-84, yacheng07-71, yacheng98-2 and yacheng93-26 were suggested to use in cross breeding. Among the 41 families new valiaty which has more economic benefit could be selected more easily from these cross: ROC22 x yacheng 84 -153, funong02-6427 x yacheng06-140, yacheng91-58 x yuetang93-159, yacheng82-96 x ROC22 ， yacheng93-26 x yunzhe02-2540, yacheng71-374 x ROC22, these cross combinations would be used widely in sugarcane breeding. [ABSTRACT FROM AUTHOR]

bHLH is a superfamily in plant kingdom, whose members participate in the processes of plant growth, development, and stresses resistance. But up to now, the functions of bHLHs in cotton are less studied and reported. This paper took Gossypium hirsutum as material, seperates and clones gene-GhbHLH4, and carried out initial analysis on its function. The results showed that there are abundant stress-response relevant cis-elements in the promoter region of gene GhbHLH4. The leaves and roots of transgenic GhbHLH4 Arabidopsis plants were wider and longer than WT. Transgenic GhbHLH4 plants grew normally under long-time treatment of 150 mmol/L NaCl. The results of this study has laid a foundation for thorough understanding the molecular mechanism of salt tolerance in GhbHLH4 gene. [ABSTRACT FROM AUTHOR]

In this paper, we summarized breeding targets of sprouted soybean as well as its hereditary variation of sprout traits, technologies of genetic improvement, generations selection method, and variety situations both domestic and abroad. We also explored the evaluation and utilization of sprout characteristics on soybean germplasm resources, and the integration of breeding techniques on exploring sprout quality. [ABSTRACT FROM AUTHOR]