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GENETIC ANALYSIS OF ROOT CHARACTRS AND THEIR RELATION TOPHOSPHORUS EFFLCIENCY IN SOYBEAN(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2006年02期
Page:
158-163,173
Research Field:
Publishing date:

Info

Title:
GENETIC ANALYSIS OF ROOT CHARACTRS AND THEIR RELATION TOPHOSPHORUS EFFLCIENCY IN SOYBEAN
Author(s):
Yuan Qinghua Nian Hai 　 Chen Dagan Liao Hong 　 Yan Xiaolong
(Department of Plant Breeding , College of Agronomy , South China AgriculturalUniversity , Guangzhou 510642)
Keywords:
Soybean ; Low-phosphorus soil ; Root traits; Genetic analysis
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2006.02.0158
Abstract:
　 In this study , two contrasting soybean genotypes BD2 and BX10 from Guangdong and Brazilwere used and a cross between them was made to produce F 1 , F 2 progenies. The inheritance of soybean roottraits and relationship between the root and other traits were investigate by the experiments of nutrient so-lution and soil cultivation.The results showed that there were significant differences in most root traits between the two geno-types. Both of the total root length and P efficiency of F 1 showed significant over-parent heterosis and thevalue was 68 %and 56% respectively. T he distribution of these traits in F 2 were all continuous and seemed to controlled by multi-genes. Moreover , over-parent segregates were observed forthe traits. Further study indicated that most of the traits were controlled by two pair of major genes to-gether with other multi-genes. Except average root diameter (absent of major gene in solution culture),the genetic model of the total root length , surface area and volume in soil cultivation were coincident withthose in solution culture. Correlation analysis reveals that indirect are possible for root traits and P effi-ciency due to positive correlation between root traits and yield and biomass. Furthermore, because the her-itabilities of most root traits is high in soil cultivation so it is feasible to carry out progeny selection inbreeding programs.

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Last Update: 2016-12-14