摘要
【目的】明确12个美国新引进甘蔗亲本的开花习性,为甘蔗育种的亲本选配提供参考依据。【方法】于2013/14～2017/18年连续5年杂交季对该亲本的始花期、抽穗率和花粉染色率进行调查和分析。【结果】甘蔗亲本始花期、抽穗率和花粉染色率的广义遗传力分别为0. 9518、0. 7961和0. 9384;始花期最早的亲本是CP07-1618和CP09-4448,最迟的是CP07-2137,2015/16杂交季各亲本的始花期普遍最晚,其它年份杂交季各亲本的始花期差异不明显;抽穗率低的亲本是CP01-2390、CP07-2137和CP09-4707,均属于难开花亲本,其余9个亲本均属于易开花亲本;花粉染色率低的亲本是CP00-1630、CP06-3458、CP07-1618和CP07-2137,其花粉染色率历年均不超过30%,杂交时只能作为母本,CP06-2422和CP09-4448的花粉染色率最高。【结论】甘蔗亲本始花期、抽穗率和花粉染色率的广义遗传力均属遗传力较高的性状,可在杂交组合配制阶段对该亲本进行较严格的选择。
【Objective】To provide reference basis for parents selection and matching of sugarcane breeding,the flowering habits of 12 newly introduced sugarcane parents from America were clarified.【Method】The initial flowering time,heading rate and pollen dyeing rate were investigated and analyzed in continuous 5 crossing seasons from 2013/14 to 2017/18.【Result】Broad-sense heritability of the initial flowering time,the heading rate and the pollen dyeing rate was 0.9518,0.7961 and 0.9384,respectively.The parents with the earliest first flowering time were CP07-1618 and CP09-4448,and the parent with the latest first flowering time was CP07-2137.The latest flowering time for the 12 parents was in 2015/16 crossing season.There was no significant difference in initial flowering time among the parents in other crossing seasons.The parents with low heading rate were CP01-2390,CP07-2137 and CP09-4707,belonging to difficult flowering parents,and the rest of 9 parents were easy flowering parents.The parents with small pollen dyeing rates were CP00-1630,CP06-3458,CP07-1618,CP07-2137,which could only be used as female parents because their pollen dyeing rates were no more than 30%in all crossing seasons.The parents with high pollen rate were CP06-2422 and CP09-4448.【Conclusion】The broad-sense heritability characters of the initial flowering time,heading rate and pollen dyeing rate of sugarcane parents were high heritability,so the 12 parents could be selected strictly in the stage of crossing combination.
作者
雷敬超
周会
高丽花
韦金菊
黄海荣
邓宇驰
李翔
李杨瑞
杨荣仲
吴杨
高轶静
LEI Jing-chao;ZHOU Hui;GAO Li-hua;WEI Jin-ju;HUANG Hai-rong;DENG Yu-chi;LI Xiang;LI Yang-rui;YANG Rong-zhong;WU Yang;GAO Yi-jing(Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Sugarcane Genetic Improvement/ Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, P.R.China, Guangxi Nanning 530007, China;Department of Biotechnology, Fujian Vocational College of Agriculture, Fujian Fuzhou 350007, China)
出处
《西南农业学报》
CSCD
北大核心
2019年第1期25-29,共5页
Southwest China Journal of Agricultural Sciences
基金
国家重点研发计划资助(2018YFD0201100)
国家糖料产业技术体系建设专项项目(CARS-17015)
广西科技重大专项项目(桂科AA17202042-2)
广西自然科学基金项目(2016GXNSFAA380010
2016GXNSFBA380138)
广西科技计划项目(桂科AD17195100)
广西农业科学院科技发展基金项目(2015JM01
2015JZ146)
关键词
美国新引进
甘蔗亲本
开花习性
遗传分析
Newly introduced from America
Sugarcane parents
Flowering habit
Heritability
