摘要
以两个温带群体、两个亚热带群体为试验材料,利用混合选择法分别在热带、亚热带、温带生态环境进行一轮混合选择,随后进行遗传平衡,第2年在4个地点进行田间综合农艺性状鉴定。研究发现,温带群体的株高、穗位高在温带环境改良效果最佳,穗粗、穗行数和百粒重在热带、亚热带环境改良效果最佳;亚热带群体的株高、穗位高、穗长、秃尖长和单株产量在热带、亚热带环境改良效果最佳,穗粗和穗行数在温带环境改良效果最佳;温带群体的穗长、行粒数、秃尖长、单株产量和亚热带群体的行粒数、百粒重的改良效果因生态条件而异。
This study utilized two temperate and two subtropical populations as experimental materials,a round of mass selection was implemented in tropical,the subtropical,and temperate environments,followed by a genetic equilibrium process.In the subsequent year,comprehensive agronomic trait identification was conducted at 4 sites to evaluate the improvement effects of the four populations under mixed selection across various ecological condi⁃tions.The results showed that the plant height and ear height of the temperate population exhibited the best improve⁃ment effect in the temperate environment.The improvement effect of ear diameter,rows per ear,and 100-kernels weight was the best in tropical and subtropical environments.The plant height,ear height,ear length,bald tip length,and yield per plant of subtropical populations had the best improvement effects in tropical and subtropical environments.The improvement effect of ear diameter and rows per ear was the best in temperate environments.The improvement effects of ear length,kernels per rows,bald tip length,yield per plant in temperate populations,as well as kernels per rows and 100-kernels weight in subtropical populations varied depending on ecological conditions.
作者
邱贵兰
李燕
岩罕温龙
罗曦
李红梅
马孝玲
李晓叶
赵后娟
杜林
夏馨雨
唐海涛
吴元奇
QIU Gui-lan;LI Yan;YAN HAN Wen-long;LUO Xi;LI Hong-mei;MA Xiao-ling;LI Xiao-ye;ZHAO Hou-juan;DU Lin;XIA Xin-yu;TANG Hai-tao;WU Yuan-qi(Maize Research Institute,Sichuan Agricultural University,Chengdu 610066;Crop Research Institute,Sichuan Academy of Agricultural Sciences/Environment-friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province,Chengdu 610066;Jinghong Seed Management Station,Jinghong 666100;Plant Protection Research Institute,Sichuan Academy of Agricultural Sciences Province,Chengdu 610066,China)
出处
《玉米科学》
CAS
CSCD
北大核心
2024年第8期1-7,共7页
Journal of Maize Sciences
基金
四川省重点研发项目(2021YFYZ0017)
四川省“十四五”生物育种重大科技专项(2022ZDZX0013)
四川省“十四五”生物育种重大科技专项(2022ZDZX0016)
四川省农业科学院种源卡脖子“1+3”关键技术攻关项目“环境友好型绿色玉米新品种培育及产业化”、国家现代农业产业技术体系四川玉米创新团队建设项目“机械化生产玉米种质创新”。
关键词
玉米
群体
混合选择
改良
生态条件
Maize
Population
Mixed selection
Improvement
Ecological condition
