|Table of Contents|

Field Drought Tolerance Evaluation and Excellent Germplasm Identification of Soybean Germplasm(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2020年06期
Page:
825-832
Research Field:
Publishing date:

Info

Title:
Field Drought Tolerance Evaluation and Excellent Germplasm Identification of Soybean Germplasm
Author(s):
ZHAO Xing-zhen XU Jiang-yuan YU Li-li GU Yong-zhe LIU Zhang-xiong QIU Li-juan
(Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Key Facility for Gene Resources and Genetic Improvement/Key Laboratory of Crop Germplasm Utilization, Ministry of Agriculture, Beijing 100081, China)
Keywords:
Soybean Drought stress Drought tolerance coefficient Weighted drought tolerance coefficient
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2020.06.0825
Abstract:
In order to identify the drought-tolerant types of mini core germplasms at adult stage, screen drought-tolerant germplasm resources, and provide elite materials for drought tolerance gene discovery and soybean cultivars improvement. This study evaluated and analysised 247 soybean mini-core accessions for drought tolerance in the dry season of Hainan in 2017-2018 and 2018-2019 with three methods of drought tolerance coefficient, weighted drought tolerance coefficient and maximin-minimax. The results showed that the seed weight per plant, pods per plant and plant height under drought stress treatment decreased significantly compared with normal irrigation treatment, and the ANOVA showed that genotype were all significant for each trait.Phenotypic correlation analysis showed drought tolerance coefficient was positive correlation to weighted drought tolerance coefficient. 11,30 and 37 accessions with high tolerance were selected in 2017-2018,2018-2019 and two years jointly by using drought tolerance coefficient method, 12, 20 and 23 accessions with high tolerance were selected by weighted drought tolerance coefficient method. Two accessions with high tolerance, including Taixingniumaohuangyi (ZDD04620) and Xiaoyuanhuangdou (ZDD08564) were identified by the two methods. Seven accessions with high-yield and drought-tolerant were screened by maximin-minimax method, including Heihe 1 (ZDD00041), Dabaipi(ZDD02866), Dalihuang (ZDD06363), Yangtianxiaohuangdou (ZDD08190), Chichenglyuhuangdou (ZDD08238), Shiyuehuang (ZDD12400) and Shifangluosidou (ZDD12836).

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Last Update: 2020-12-25