植物遗传资源学报2025，Vol.26Issue(2)：237-248,12.DOI:10.13430/j.cnki.jpgr.20240526001
大豆种质资源时序性冠层覆盖度鉴定评价及优异种质筛选
Identification and Evaluation of Time-series Canopy Cover of Soybean Germplasm Resources and Screening of Elite Germplasm
摘要
Abstract
Crop germplasm resources serve as the foundational material for the development of new varieties.Advances in high-throughput phenotyping technology offer a new perspective for the exploration and utilization of superior germplasm.In this study,the time-series canopy coverage data from 1129 soybean germplasms,collected by unmanned air vehicles,along with two spatial and temporal traits,max canopy coverage(MaxCC)and canopy cover increase speed(CCSpeed),were statistically analyzed.This analysis aimed to reveal the dynamic growth characteristics and variations of germplasm resources from different ecological regions in the field.The results showed that under the planting environments of Nanchang,Jiangxi province,the MaxCC and CCSpeed of these germplasm resources exhibited substantial phenotypic diversity,with variation coefficients of 16.09％and 49.35％,respectively.Germplasms with distinct growth habits and ecological origin varied in their MaxCC and CCSpeed;those with a determinate stem growth habit showed faster CCSpeed and a higher MaxCC.Soybean germplasms from southern ecological regions demonstrated higher MaxCC and faster CCSpeed compared from other regions.Twenty-one elite germplasms with MaxCC above 90％and the CCSpeed above 0.3 d-1 were selected.These germplasms are suitable for planting in the southern region due to their early canopy closure,which can mitigate weed pressure,thus reducing field management costs.Rapid accumulation of biomass during the early growth stage can lead to higher yields in later stages.These findings provide a material basis for the breeding of new high-yielding soybean varieties with desirable characteristics and hold significant implications for soybean production.关键词
大豆/种质资源/时序性/最大冠层覆盖度/封垄速度Key words
soybean/germplasm resources/time series/max canopy cover/canopy cover increase speed引用本文复制引用
王琦,邱丽娟,白东,张皓,田宇,车荧璞,李进冬,郑海洋,金秀良,李英慧..大豆种质资源时序性冠层覆盖度鉴定评价及优异种质筛选[J].植物遗传资源学报,2025,26(2):237-248,12.基金项目
国家重点研发计划(2021YFD1201600)National Key Research and Development Program of China(2021YFD1201600) （2021YFD1201600）
