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Copyright of Journal of Signal Processing is the property of Journal of Signal Processing 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 on Communication / Tongxin Xuebao is the property of Journal on Communications Editorial Office 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 J The present paper aimed to explore the diversity and distribution rules of soil microbial community of Annona squamosa Lour. after the infection of root rot, and provide a reference basis for the screening and identification with A. squamosa pathogens of root rot. [Method J Samples of A. squamosa rhizosphere soil infected with root rot (infected rhizosphere soil) and healthy rhizosphere soil (healthy rhizosphere soil) were collected. Using high throughput sequencing technology and designing primers of ITSl and 1154,sequenced the fungal ITSl and bacterial V3 + V4 regions, and analyzed the structure and diversity of the phylum, class, order, genus, and species level. [Result] After infection with root rot, the number of fungi in its rhizosphere soil increased greatly, and the number of bacteria decreased. The classification of fungi in rhizosphere soil belonged to 2 kingdoms,5 phylum, 16 classes,36 orders,48 families,81 genera and 96 species. The classification of fungi of healthy rhizome soil belonged to 3 kingdoms, 7 phylum, 17 classes, 43 orders, 73 families, 113 genera and 160 species. The community richness and diversity index of the rhizosphere soil microorganisms decreased compared with healthy rhizosphere soil, along with fewer types of soil fungi, and uniform distribution of soil fungi. After 4 days, medium and radioactive strains were formed on PDA medium; the strains formed medium, radioactive gas bacteria; colony diameter 4. 5 cm, bacteria flat spread, full edge, round, white, gas bacteria velvet. Rhizosphere soil pathogen strains were amplified using trial primers, the results showed that the displayed strain ITS sequence and Fusarium acutatum (accession number: AY569567. 1) had 99. 45% homology, indicating the amplified ITS segment sequence (RRD- 1) was parts of F. acutatum sequences. [Conclusion] The community richness and diversity index of root soil microorganisms decreased greatly compared with that of healthy soil, and the types of soil fungi in pathogenic plants were less, and the uniformity increased. After pathogen morphological observation and biological comparison, the pathogen that caused root rot of A. squanwsa in Guangxi might be F. acutatum. [ABSTRACT FROM AUTHOR]

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal 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.)

[Objective]To provide scientific references for the screening of suitable Annona atemoya Hort. cv. ’ Gefner’ in central and southern Guangxi, the effects of different rootstocks on the growth, development and fruit quality of Atemoya were studied. [Methods] Bullock’ s heart, Thin scale, TD No. 2, Cherimolia and’African Pride’ were selected as rootstocks to study the effects of different rootstocks on the survival rate of seedling grafting, field growth potential, fruit yield and quality. [Result] The results showed that the survival rates of seeding grafted with different rootstock panicle combinations were above 80 % and had strong grafting affinity, the rate of growth potential, fruit yield and quality of the grafting plants were different according to the stock. The comprehensive performance of Bullock’s heart, Cherymoya, ’African Pride’ were better than those of Thin scale and TD No. 2. [Conclusion] According to the comprehensive evaluation, Bullock’ s heart, Cherymoya and ’ African Pride’were suitable to be used as the grafted rootstock varieties of Atemoya in the central and southern Guangxi. [ABSTRACT FROM AUTHOR]

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal 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.)