Universidad de Nariño, Facultad de Ciencias Agrícolas, Grupo de Investigación en Producción de Frutales Andinos - GPFA, Pasto, Nariño, Colombia.
Braz J Biol. 2024 Sep 13;84:e285691. doi: 10.1590/1519-6984.285691. eCollection 2024.
The lulo (Solanum quitoense Lam.) is a fruit tree of great importance for southern Colombia, given its demand and its potential as an exotic fruit in the international market. However, there is no information on variation and heritability, fundamental aspects for evaluating selection. The objective of this research was to estimate the heritability of yield, fruit weight (FW), total soluble solids (TSS) and maturity index (MI) in half-sib families (HSF) of lulo from the first cycle of recurrent selection. Strict sense heritability ( h e 2 ) across four locations in the 50 HSF were low for yield, MI and for FW, while for TSS it was high. The 50 FMH showed a high h e 2 in yield in Arboleda, Cartago, Tangua and La Unión. TSS was high in all four locations. For FW it was moderate in Cartago, Tangua, La Unión and Arboleda. In MI it was high in Tangua and La Unión and low in Arboleda and Cartago. The h e 2 in 10 HSF selected across four locations presented values higher than 50 HSF, with a high value for yield in Arboleda, moderate in Cartago and Tangua and low in La Unión; In FW it was high in Arboleda, Tangua and La Unión, and moderate in Cartago. The results indicate the existence of adequate genetic variance to be able to select and achieve high genetic gain in the traits evaluated in HSF of lulo.
树橘（Solanum quitoense Lam.）是哥伦比亚南部一种非常重要的果树，因其市场需求以及作为外来水果的潜力而备受关注。然而，关于其变异性和遗传力的信息尚未可知，而这两个因素对于评估选择具有重要意义。本研究的目的是估计树橘第一次轮回选择半同胞家系（HSF）的产量、果实重量（FW）、总可溶性固形物（TSS）和成熟指数（MI）的遗传力。在四个地点的 50 个 HSF 中，产量、MI 和 FW 的狭义遗传力（h e 2）较低，而 TSS 的遗传力较高。50 个 FMH 在 Arboleda、Cartago、Tángua 和 La Unión 四个地点的产量均表现出较高的 h e 2。TSS 在四个地点均较高。FW 在 Cartago、Tángua、La Unión 和 Arboleda 四个地点表现为中等水平。MI 在 Tangua 和 La Unión 表现较高，而在 Arboleda 和 Cartago 则较低。在四个地点选择的 10 个 HSF 的 h e 2 值高于 50 个 HSF，产量在 Arboleda 的值较高，在 Cartago 和 Tangua 的值为中等，在 La Unión 的值较低；FW 在 Arboleda、Tangua 和 La Unión 的值较高，在 Cartago 的值为中等。研究结果表明，在树橘 HSF 中，存在足够的遗传方差来进行选择，并在评估的性状中实现较高的遗传增益。
