1.湖南杂交水稻研究中心/杂交水稻全国重点实验室,长沙 410125;2.湖南省农业科学院,长沙 410125
主要从事水稻遗传育种研究,E-mail: 15179686081@163.com
黄凤林,主要从事水稻遗传育种研究,E-mail: flhuang@hunaas.cn
第三次湖南省农作物种质资源普查与收集行动;湖南省农业科技创新资金项目(2024CX18)
1.Hunan Hybrid Rice Research Center/State Key Laboratory of Hybrid Rice, Changsha 410125;2.Hunan Academy of Agricultural Sciences, Changsha 410125
Foundation projects: The Third General Survey and Collection Action of Crop Germplasm Resources in Hunan Province; Hunan Agricultural Science and Technology Innovation Fund Project (2024CX18)
对“第三次湖南省农作物种质资源普查与收集行动”项目(简称“湖南省三普”)收集的225份水稻种质资源进行主要农艺性状和抗病性鉴定评价,结果表明,湖南省三普收集的水稻种质资源分为籼亚种与粳亚种,以籼亚种为主,占94.2%;粘稻与糯稻占比接近,分别为53.8%和46.2%;种皮颜色种类丰富,有白色、黑色、红色、紫色、绿色和褐色,其中红米、黑米、紫米、绿米和褐米种质资源共41份。湖南省三普收集的水稻种质资源遗传变异丰富,数量性状变异系数范围为6.47%~52.54%,多数表现为抗倒伏、茎秆角度适中、剑叶直立、颖尖秆黄色、颖色黄色、无芒且谷粒形状多为中长形。鉴定出14份生育期适宜(110~130 d)、株高适宜(110~140 cm)、结实率高(>90%)、抗病性较强(中抗及以上)、穗大粒多(≥200粒/穗)、千粒重适宜(≥30 g)的优良种质资源,同时,还筛选出13份优良糯稻种质资源、20份有色功能稻种质资源。本研究优异水稻种质资源将为基础研究与新品种培育等提供重要的物质基础。
The main agronomic traits and disease resistance of 225 rice germplasm resources collected during 'The Third General Survey and Collection Action of Crop Germplasm Resources in Hunan Province' project (hereinafter referred to as ‘Hunan Province Third Census’) were identified and evaluated. This collection predominantly comprised indica subspecies accounting for 94.2%, and exhibited nearly equal proportions of sticky rice (53.8%) and waxy rice (46.2%) accessions. The remarkable diversity on seed color, including white, black, red, purple, green and brown, with 41 accessions exhibiting pigmented rice traits, were observed. Their genetic variations are abundant, with coefficients of variation ranging from 6.47% to 52.54%. Most accessions showed favorable agronomic characteristics, including lodging resistance, moderate stem angle, erect flag leaf, yellow glume tip, yellow glume color, awnless and medium-long grain shape. Fourteen accessions were identified with optimal growth duration ranging from 110 to 130 days, suitable plant height (110 to 140 cm), high seed setting rate (>90%), strong disease resistance (medium resistance or higher), large panicle size (≥200 grains per panicle), and favorable 1000-grain weight (≥30 g). Meanwhile, 13 and 20 accessions showing waxy and pigmented coloration, respectively, were identified. These germplasm resources serve as raw materials supporting the academic research and breeding for new varieties in rice.
宋根才,段永红,杨天铭,等.第三次湖南省水稻普查收集种质资源鉴定评价[J].植物遗传资源学报,2025,26(4):646-655.
复制