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Studies on Selecting Indices and Evaluation Methods for Barley's (Hordeum vulgare L.) Waterlogging Tolerance

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Wang, J, Zhou, M, Xu, R, Lu, C and Huang, Z 2007 , 'Studies on Selecting Indices and Evaluation Methods for Barley's (Hordeum vulgare L.) Waterlogging Tolerance' , Scientia Agricultura Sinica, vol. 40, no. 10 , pp. 2145-2152 .

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Abstract

[Objective] Waterlogging stress is one of the major problems in barley production; paticularly in wetlands.
Development of tolerant cultivars is the most cost efficient way to overcome this problem. The objective of this study was to investigate suitable selection criteria for waterlogging tolerance in barley.

[Method] 165 DH lines derived from a barley cross
(Yerong x Franklin) were analyzed using principal component analysis, dynamic clustering and subordinate function, which was based on the specimen correlation matrix of 11'traits. This included plant height (PH), spike length (SL), the top 1st internode length
(TFIL), spike per plant (SPP), grains per spike (GPS), grain weight per plant (GWPP), grains per plant (GPP), dry weight per plant (DWPP), weight of 1000grains (WTG), number of greenleaf (NGL) and Chlorophyll (ChI).

[Result] Three principal components, two for spike-grain factor and one for NGL factor, dynamic clustering, and comprehensive evaluation were used to identify lines for
waterlogging tolerance, which led to the classification of 165 lines into 3 different levels of tolerance. 42, 93 and 30 lines were classified as waterlogging tolerant, medium tolerant and sensitive, respectively.

[Conclusion] The new selecting indices and comprehensive evaluation method provide a useful tool for further study on QTLs controlling waterlogging tolerance and selecting
for waterlogging tolerance in a breeding program.

Item Type: Article
Authors/Creators:Wang, J and Zhou, M and Xu, R and Lu, C and Huang, Z
Keywords: Barley; Double haploid (DH) population; Waterlogging tolerance; Principal component analysis; Dynamic clustering; Comprehensive evaluation
Journal or Publication Title: Scientia Agricultura Sinica
Publisher: China
ISSN: 0578-1752
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