Breeding Science · 2008 · 11 citations · 25 references
Life SciencesGeneticsPlant SciencesPlant Genetic ResourcesPlant GeneticsQuantitative GeneticsAgronomic Trait EvaluationCrop PhenotypingPlant Breeding GeneticsQuantitative Trait InheritanceQuantitative Trait LociTrait ArchitectureAdditive Qtl EffectsArchitecture Trait HeritabilityBroad-sense HeritabilityEnvironment Interaction In QtlInternode Length VariationQtl By Environment InteractionQtl DetectionQuantitative Trait Variation
To improve the efficiency of breeding cucumber in China, we previously mapped QTL for most fruit- and flower-related traits of this species. Here, we mapped QTLs for six plant architecture traits including lateral branch number (LBN), lateral branch total length (LBTL), main-stem length (MSL), internode length (INL), main-stem diameter (MSD), and petiole length (PL) were detected in greenhouse environments. In total, 14 QTLs were identified for the six traits (LBN, 3; LBTL, 2; MSL, 3; INL, 2; MSD, 2; and PL, 2) with additive heritability of individual QTL ranging from 1.6% to 29.5%. Five QTLs for four traits (LBN, LBTL, MSL, and INL) were observed to have significant (P ≤ 0.05) QTL × environment interaction effects. The broad-sense heritability for the six traits ranged from 8.5% to 47.0%. The QTL information presented in this research, together with the data in our previous study on the fruit- and flower-related traits, will facilitate the breeding of elite cucumber cultivars by marker-assisted selection in China.
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Importance of epistasis as the genetic basis of heterosis in an elite rice hybrid
Shan Yu, J. X. Li, Chao Xu et al. · Proceedings of the National Academy of Sciences · 1997 · 734 citations
Life Sciences, Agronomy, Genetics +14