摘要
饲用高粱作为酿酒和牲畜饲料的重要原料,拥有众多优良的农艺性状,其全基因组测序工作已经完成,分子标记辅助选择技术广泛应用于高粱育种工作中,影响高粱农艺性状的数量基因位点已被定位得到。分蘖作为一项重要的株型性状,对高粱的耐密性、抗倒性、光吸收效能等生理特性有重要的影响。当前饲用高粱株高、穗长、叶部形态等性状的基因定位工作已有相当顺利的进展,而分蘖性状因易受各种因素的影响、研究难度较大,对分蘖的基因定位工作进展则较为缓慢。本研究总结了近期对高粱分蘖性状以及其他农艺性状QTL基因定位的研究进展,同时提出在不同农作物品种进化的过程中,具有一部分同源性高的保守序列保留下来,证明同一物种不同性状之间具有关联性这一观点。在高粱的育种研究中,将基因工程育种与实验统计、数量遗传学结合,能更好地揭示各项因素对高粱农艺性状的贡献程度,提高育种效率,减少人力物力的损失。
Forage sorghum is an important raw material for winemaking and livestock feed.It has many excellent agronomic traits.Its genome-wide sequencing work has been completed.Molecular marker-assisted selection technology is widely used in sorghum breeding work.The number of genetic loci affecting the sorghum agronomic traits has been positioned.Tillering,as an important plant type trait,has an important influence on the physiological characteristics of sorghum,such as the tolerance,lodging resistance and light absorption efficiency.At present,considerable progress has been made in gene mapping of plant height,ear length,leaf morphology and other traits of forage sorghum.However,the progress of gene mapping for tillering is relatively slow due to the fact that tillering traits are easily affected by various factors.This study summarized the recent research progress of QTL mapping for tillering traits and other agronomic traits in sorghum,and proposed that some conserved sequences with high homology were retained during the evolution of different crop varieties,which proved that there was correlation between different traits of the same species.In sorghum breeding research,combining genetic engineering breeding with experimental statistics and quantitative genetics can better reveal the contribution of various factors to sorghum agronomic traits,improve breeding efficiency and reduce the loss of human and material resources.
作者
康晨
罗峰
孙守钧
Kang Chen;Luo Feng;Sun Shoujun(College ofAgronomy&Resources and Environment,Tianjin Agricultural University,Tianjin,300384)
出处
《分子植物育种》
CAS
北大核心
2021年第15期5062-5070,共9页
Molecular Plant Breeding
基金
农业部“引进国际先进农业科学技术”项目(2016-X09)资助。
