不同胚乳表型对高粱农艺性状及产量的影响

Effects of Different Endosperm Phenotypes on Agronomic Traits and Yield in Sorghum

为探究高粱籽粒胚乳质地及淀粉类型对高粱产量、株高和其他农艺性状的潜在影响,以一个粉质高粱品系作为母本,一个糯性高粱品系作为父本,于2021年进行人工杂交,2022年对F2胚乳表型重组群体进行随机抽样调查,以鉴定样本胚乳表型,测量和分析样本的产量、株高和其他农艺性状。结果表明,糯性淀粉类型显著降低了植株的单穗重,粉质胚乳质地显著降低了植株的单穗重、千粒重和株高。然而,选择出高产且具有糯性淀粉类型或粉质胚乳质地的品系是可能的,为了有效地识别出具有这种表型的高产品系,需要对其育种工作予以重视。

In order to explore the potential effects of endosperm texture and starch type on grain yield,plant height,and other agronomic traits in sorghum,this study conducted artificial hybridization between a waxy sorghum line as the male parent and a floury sorghum line as the female parent in 2021.In 2022,a sample survey was conducted on the F2 population of recombinant endosperm phenotype to identify sample endosperm phenotypes,measure grain yield,plant height,and other agronomic traits for analysis.The results showed that plants with the waxy starch had significantly reduced panicle weight,while those with floury endosperm texture had significantly reduced panicle weight,1000-grain weight and plant height.Nonetheless,high-yielding lines with a waxy starch type or floury endosperm texture can be chosen,and breeding efforts for these lines must be prioritized in order to effectively discover high-yielding lines with this phenotype.