当前位置: X-MOL 学术Cereal Res. Commun. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Changes in yield determinants and quality traits in wheat after 12 cycles of recurrent selection
Cereal Research Communications ( IF 1.6 ) Pub Date : 2020-07-08 , DOI: 10.1007/s42976-020-00053-w
R. H. Maich , G. A. Manera , W. H. Londero , L. S. Vanzetti , M. Helguera , J. A. Di Rienzo

The objective of this study was to test the genetic response to 12 cycles of a recurrent selection program for grain yield and related traits. During two seasons the 39 S-derived families (three/C0–C12 populations) were evaluated under conventional (CT) and non-tillage (NT) systems. Grain and biomass yield were determined. The grain number per square meter and harvest index were also estimated. Flour protein content, sodium dodecyl sulphate sedimentation, and lactic acid solvent retention capacity were considered as end-use quality predictive tests. High molecular weight glutenin subunits (HMW-GS) variation was also analyzed. A significant increase in grain yield per selection cycle, estimated in 3.25 g m−2 (1.3%) per year, was found under NT, but there was a not significant genetic progress under CT. The decrease in the percentage of protein in the most advanced selection cycles (11.0% vs. 9.7%) did not negatively affect its quality. HMW-GS variation analysis showed the erosion of extreme subunits related to gluten strength. After 24 years of recurrent selection, the grain yield was improved without affecting its industrial quality.

中文翻译:

12轮轮选后小麦产量决定因素和品质性状的变化

本研究的目的是测试对谷物产量和相关性状的 12 个循环选择程序的遗传反应。在两个季节期间,在常规 (CT) 和免耕 (NT) 系统下对 39 个 S 衍生家庭(三个/C0-C12 种群)进行了评估。测定谷物和生物质产量。还估算了每平方米的谷物数和收获指数。面粉蛋白质含量、十二烷基硫酸钠沉淀和乳酸溶剂保留能力被视为最终使用质量预测测试。还分析了高分子量谷蛋白亚基 (HMW-GS) 变异。在 NT 下发现每个选择周期的谷物产量显着增加,估计为每年 3.25 g m-2 (1.3%),但在 CT 下没有显着的遗传进展。在最先进的选择周期中蛋白质百分比的降低(11.0% 对 9.7%)并未对其质量产生负面影响。HMW-GS 变异分析显示与面筋强度相关的极端亚基的侵蚀。经过24年的复选,在不影响工业品质的前提下,提高了粮食产量。
更新日期:2020-07-08
down
wechat
bug