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Genetics of fruit yield and its component traits under different fruiting habit backgrounds in chilli (Capsicum annuum L.).
Journal of Genetics ( IF 1.5 ) Pub Date : 2019-09-24
C Anilkumar 1 , A Mohan Rao , S Ramesh , B Bhavani , Pranesh
Affiliation  

The six basic generations (two parents, F1, F2 and backcrosses) of 14 crosses developed from nine parents differing in fruits node-1 and fruit orientation were evaluated to decipher the genetics of three quantitative traits (average fruit weight, fruits plant-1 and green fruit yield plant-1) during the rainly season of 2016 and 2017. The magnitude and direction of the additive genetic effects [a], dominance genetic effects [d], magnitudes of additive genetic variance (σ2 A) and dominance genetic variance (σ2 D) varied with the genetic background of the crosses and traits. In the genetic background of crosses involving parents differing in fruit node-1, the inheritance of average fruit weight, fruits plant-1 and fruit yield plant-1 were controlled by the genes with both additive and ambidirectional dominant effects. On the contrary, genes with only additive effects controlled the inheritance of average fruit weight, fruits plant-1 and fruit yield plant-1 in most genetic backgrounds of crosses involving parents differing in fruit orientation and those differing in both fruits node-1 and fruit orientation. Further, the genes controlling the inheritance of all the traits are dispersed among the parents used in the investigation. These results are discussed in relation to strategies to be used in breeding chilli.

中文翻译:

不同辣椒果实习性背景下果实产量及其组成性状的遗传研究。

通过对9个亲本在结点1和果实方向上不同的9个亲本开发出的14个杂交的6个基本世代(两个亲本,F1,F2和回交)进行了评估,以破译三个定量性状(平均果实重,果实植株1和果实)的遗传学。绿色水果产量植物-1)在2016年和2017年的雨季。加性遗传效应[a],优势遗传效应[d],加性遗传方差(σ2A)和优势遗传方差(a)的大小和方向σ2D)随着杂交和性状的遗传背景而变化。在涉及果节点-1不同的父母的杂交的遗传背景中,平均果实重量,果实植物1和果实产量植物1的遗传受具有加性和双向定向作用的基因控制。反之,仅具有加和作用的基因在涉及亲本方向不同,亲本节点-1和方向不同的杂交的大多数遗传背景中,控制了平均果实重,果实1和果实产量1的遗传。此外,控制所有性状遗传的基因分散在研究中使用的亲本中。讨论了有关辣椒育种策略的这些结果。控制所有性状遗传的基因分散在研究中使用的亲本中。讨论了有关辣椒育种策略的这些结果。控制所有性状遗传的基因分散在研究中使用的亲本中。讨论了有关辣椒育种策略的这些结果。
更新日期:2019-11-01
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