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辣椒实验杂交种的基因型与环境互作

Genotype x environment interaction on experimental hybrids of chili pepper.

作者信息

Cabral N S S, Medeiros A M, Neves L G, Sudré C P, Pimenta S, Coelho V J, Serafim M E, Rodrigues R

机构信息

Departamento de Agronomia, , , Brasil.

Laboratório de Melhoramento Genético Vegetal, , , Brasil.

出版信息

Genet Mol Res. 2017 Apr 20;16(2):gmr-16-02-gmr.16029551. doi: 10.4238/gmr16029551.

Abstract

In Brazil, cultivation of hybrid plants comprise near 40% of the area grown with vegetables. For Capsicum, hybrids of bell and chili peppers have already exceeded 50% and over 25% of all are commercialized seeds. This study aimed to evaluate new pepper hybrids in two environments, Cáceres, MT, and Campos dos Goytacazes, RJ, Brazil. Nine experimental hybrids of C. baccatum var. pendulum were tested and trials were performed in a randomized block design, with three replications and eight plants per plot. In each environment, plants were assessed for canopy diameter, plant height, number of fruit per plant, mean fruit mass per plant, fruit length and diameter, pulp thickness, and content of soluble solids. Seven of the eight traits have differed significantly due to environment variation. Furthermore, genotype and environment interaction was highly significant for number of fruit per plant, mean fruit mass per plant, fruit length, and fruit diameter. Choosing a hybrid to be grown in one of the studied locations must be in accordance with the sought characteristics since there is a complex interaction for some studied traits.

摘要

在巴西,杂交植物的种植面积占蔬菜种植总面积的近40%。就辣椒而言,甜椒和辣椒的杂交品种已超过50%,且所有商业化种子中有超过25%是杂交种子。本研究旨在评估两种环境下的新型辣椒杂交品种,这两种环境分别是巴西马托格罗索州的卡塞雷斯以及里约热内卢州的坎波斯-杜斯戈伊塔卡泽斯。对9个黄灯笼辣椒变种的实验杂交品种进行了测试,试验采用随机区组设计,重复3次,每个小区种植8株植株。在每种环境下,对植株的冠幅直径、株高、单株结果数、单株平均果实质量、果实长度和直径、果肉厚度以及可溶性固形物含量进行了评估。8个性状中的7个因环境差异而有显著不同。此外,基因型与环境的交互作用对单株结果数、单株平均果实质量、果实长度和果实直径具有高度显著影响。由于某些研究性状存在复杂的交互作用,因此在其中一个研究地点选择种植的杂交品种必须符合所需的特性。

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