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GENETIC VARIATION OF ROOT TRAITS AT SEEDLING STAGE AND THEIR RELATIONSHIP WITH STRESS TOLERANCE IN SOYBEAN(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2007年02期
Page:
127-133
Research Field:
Publishing date:

Info

Title:
GENETIC VARIATION OF ROOT TRAITS AT SEEDLING STAGE AND THEIR RELATIONSHIP WITH STRESS TOLERANCE IN SOYBEAN
Author(s):
LIU Ying1; 2; GAI Jun-yi1; L Hui-neng1
1.Soybean Research Institute of Nanjing Agricultural University, National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing 210095；
2.Hebei University of Engineering, Handan 056038
Keywords:
Soybean(Glycine max(L.) merr.); Root traits related to stress tolerance; Genetic variation
PACS:
S565.110.417
DOI:
10.3969/j.issn.1000-9841.2007.02.002
Abstract:
Sixty two accessions of soybean (Glycine max (L.) Merr.) selected from 301 representative entries from Huanghuaihai and Middle-Lower Changjiang Valleys according to their root performance were used to study their genetic variation of root traits at seedling stage and their relationship with above-ground traits and tolerance to abiotic stresses. Dry root weight, total root length and root volume of accessions from Middle-Lower Changjiang Valleys with later maturity developed more quickly than those from Huanghuaihai Valleys with earlier maturity. The correlations between these root traits and whole plant dry weight were pretty high, those between the mean membership index of drought tolerance and the relative values of total root length, root volume and dry root weight per plant were all significant at 0.01 level and so did for the correlations between mean membership index of aluminum toxin tolerance and the stressed to unstressed relative values of number of lateral roots, tap root length, total root length, root volume and dry root weight. These relative root traits had wide variation among accessions and could be used for identification of drought and aluminum tolerance.

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Last Update: 2014-10-21