Systematic Errors Introduced into Sorghum Grain Yield Data: Does the Multiseed (<i>msd</i>) Trait Increase Sorghum Seed Yield?

• 作者: Dennis C. Gitz III Jeffrey T. Baker John E. Stout Robert J. Lascano Zhanguo Xin
• 来源期刊: 美国植物学期刊(英文)
• 学科: 医学
• 关键词: SORGHUM YIELD YIELD Components msd Multiseed YIELD Measurement Error
• 年，卷（期）: 2019,（9）
• 页码范围: 1503-1516
• 页数: 14页
• 分类号: R73

摘要

Multiseed (msd) mutant sorghum [Sorghum bicolor (L.) Moench] lines with greatly increased seed numbers were developed. It was originally thought that the msd trait could increase grain yield several times in comparison with the wild type from which the mutant was derived. However, in a small plot trial, msd seed yield decreased when compared to the parent line. Herein we report results that msd seed yield remained either unchanged or slightly increased in comparison to the parent line. We suggest that attempts to measure msd sorghum seed yield were complicated due to systematic errors associated with the post-harvest processing methods, including threshing and pneumatic winnowing equipment that was used for harvest. That is, seed recovery and seed loss from individual panicles were affected by the post-harvest processing. When evaluating sorghum grain yield of types with different seed sizes, threshing and seed cleaning harvesting methods should be optimized for each sorghum line.