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Novel QTLs for growth angle of seminal roots in wheat (Triticum aestivum L.)
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Novel QTLs for growth angle of seminal roots in wheat (Triticum aestivum L.)
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Journal Article
Novel QTLs for growth angle of seminal roots in wheat (Triticum aestivum L.)
2012
Overview
AIMS: Because plants cannot change their environmental circumstances by changing their location, they must instead adapt to a wide variety of environmental conditions, especially soil conditions. One of the most effective ways for a plant to adapt to a given soil condition is by modifying its root system architecture. We aim to identify the genetic factors controlling root growth angle, a trait that affects root system architecture. METHODS: The present study consisted of a genetic analysis of the seminal root growth angle in wheat; the parental varieties of the doubled haploid lines (DHLs) used in this study exhibited significantly different root growth directions. Using the ‘basket’ method, the ratio of deep roots (DRR; the proportion of total roots with GA > 45 degrees) was observed for evaluating deep rooting. RESULTS: We were able to identify novel quantitative trait loci (QTLs) controlling the gravitropic and hydrotropic responses of wheat roots. Moreover, we detected one QTL for seminal root number per seedling (RN) on chromosome 5A and two QTLs for seminal root elongation rate (ER) on chromosomes 5D and 7D. CONCLUSIONS: Gravitropic and hydrotropic responses of wheat roots, which play a significant role in establishing root system architecture, are controlled by independent genetic factors.
Publisher
Springer-Verlag,Springer,Springer Netherlands,Springer Nature B.V
Subject
Agronomy. Soil science and plant productions
/ Analysis
/ Animal, plant and microbial ecology
/ Biological and medical sciences
/ Biomedical and Life Sciences
/ Classical genetics, quantitative genetics, hybrids
/ Ecology
/ Fundamental and applied biological sciences. Psychology
/ General agronomy. Plant production
/ genetic techniques and protocols
/ Genetics of eukaryotes. Biological and molecular evolution
/ Growth
/ Plants
/ Rooting
/ Roots
/ Soil
/ Soil-plant relationships. Soil fertility
/ Soil-plant relationships. Soil fertility. Fertilization. Amendments
/ Soils
/ Wheat
