|Table of Contents|

Seed-flooding Tolerance Identification and Comparison of Soybean Germplasm Resources in Southern China(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2020年02期
Page:
165-173
Research Field:
Publishing date:

Info

Title:
Seed-flooding Tolerance Identification and Comparison of Soybean Germplasm Resources in Southern China
Author(s):
CHEN Wen-jie;  CHEN Yuan;  WEI Qing-yuan;  GUO Xiao-hong;  TANG Fu-yue;  LIANG Jiang
(Cash Crops Research Institute/Maize Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China)
Keywords:
Southern soybean;  Germplasm resource;  Seeding-flooding tolerance;  Identification
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2020.02.0165
Abstract:
In order to identify and compare the submergence tolerance of different soybean germplasm in southern China and provide scientific basis for submergence tolerance breeding of soybean seeds, in this study 200 soybean germplasm resources (consisted of 160 landraces and 40 cultivars) coming from seven southern provinces of China were seed-flooding treated for 120 h. And then standard germination test was conducted.We counted the electrical conductivity of soaking solution after treated for 120 h (CON120), measured the germination potential percentage (GPP), the slightly injured seedling percentage (SISP), the germination percentage (GP), and the normal seeding percentage (NSP). Comprehensive tolerance index based on principal component analysis was used to establish scoring formula, stepwise regression analysis was used to select key indicators. And then, prediction regression equation of water resistance was established, soybean seed flooding tolerance values were calculated. The results showed that there were abundant genetic variations in CON120, GPP, SISP, GP, NSP of 200 soybean germplasm resources. Two principal components were extracted, with contribution ratio 64.03% and 21.46% respectively. Seed-flooding tolerance ability of soybean germplasm resources form different provinces were different. The mean value of comprehensive seed-flooding tolerance of soybean from Hainan and Guangxi province was higher than others, with average U value 0.885 and 0.748 respectively. 15 soybean germplasms with high seed-flooding tolerance, including ZDD16876 et al., were screened out by using comprehensive index. The 40, 20 and 20 percent of the 15 high seed-flooding tolerance germplasms were from Guangxi, Guangdong and Hunan province respectively. In the land races, seed-flooding tolerance ratio of soybean from Guangdong was the highest, followed by Guangxi. In the varieties, seed-flooding tolerance ratio of soybean from Hainan was the highest. These high seed-flooding tolerance soybean germplasm resources could be used for seed-flooding tolerance breeding.

References:

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Last Update: 2020-06-10