Proposal of a super trait for the optimum selection of popcorn progenies based on path analysis.

A. Júnior, A. Santos, I. F. Gerhardt, R. N. F. Kurosawa, N. F. Moreira, M. G. Pereira, G. Gravina, F. L. Silva
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引用次数: 19

Abstract

A challenge faced by popcorn breeding programs is the existence of a negative correlation between the two main traits, popping expansion and yield, which hinders simultaneous gains. The objective of this study was to investigate the use of a new variable or super trait, which favors the reliable selection of superior progenies. The super trait 'expanded popcorn volume per hectare' was introduced in the evaluation of 200 full-sib families of the eighth recurrent intrapopulation selection cycle, which were arranged in randomized blocks with three replicates in two environments. Although the inability to obtain simultaneous gains through selection via popping expansion or yield was confirmed, the super trait was positively associated with both yield and popping expansion, allowing simultaneous gains via indirect selection using 'expanded popcorn volume per hectare' as the main trait. This approach is recommended because this super trait can be used in breeding programs to optimize selective gains for the crop.
基于通径分析的爆米花子代优选超级性状的提出。
爆米花育种计划面临的一个挑战是两个主要性状之间存在负相关,膨化扩张和产量,这阻碍了同时收获。本研究的目的是探讨利用一个新的变量或超级性状,有利于可靠地选择优质后代。以200个全同胞家族为研究对象,在2个环境中随机分组,每组3个重复,对第8次群体内选择循环的200个全同胞家族进行了评价,并引入了“每公顷扩大爆米花量”这一超级性状。虽然通过膨化或产量的选择无法同时获得增益已被证实,但超级性状与产量和膨化均呈正相关,允许以“每公顷膨化量”为主要性状的间接选择同时获得增益。这种方法是推荐的,因为这种超级性状可以用于育种计划,以优化作物的选择增益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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