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Root and Aboveground Characteristics at Seedling and Their Relationship with Drought Tolerance in Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2012年03期
Page:
399-405
Research Field:
Publishing date:

Info

Title:
Root and Aboveground Characteristics at Seedling and Their Relationship with Drought Tolerance in Soybean
Author(s):
WANG Min; YANG Wan-ming; DU Wei-jun
College of Agriculture,Shanxi Agricultural University,Taigu 030801,Shanxi,China
Keywords:
Soybean; Seedling; Root characteristic; Drought tolerancere
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2012.03.013
Abstract:
A BIL population is developed from a crossing between SNWS0048,a wild soybean with strong drought tolerance and Jinda73,a drought-sensitive variety with superior agronomic traits.The phenotypic characteristics of the BIL population were examined in seedling under drought and well-watered condition as well as the controlled environments for two years,including taproot length,root weight,root shoot ratio and so on.Root and aboveground traits and their relationship with drought-tolerance were studied using correlations and path analysis,and discussed the heredity characteristic of these traits.The result showed that plant height,shoot weight,root length and root weight were decreased and root shoot ratio was increased under drought condition.The correlative analysis showed that drought tolerant coefficient had significant positive correlation with taproot length,root weight and root shoot ratio.Path analysis showed that root dry weight in the well-watered condition and root/shoot ratio under drought stress were the main factors reflecting drought-tolerance of soybean.

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Last Update: 2014-08-16