摘要
为探讨向印度南瓜及美洲南瓜中转育中国南瓜无蔓性状的意义及可行性,进行了无蔓中国南瓜种间杂交试验,采用田间调查结合RAPD分子标记鉴定的方法研究中国南瓜无蔓性状种间遗传规律。通过比较中国南瓜无蔓性状在南瓜属3个种中的遗传表现发现:中国南瓜无蔓性状在种间杂种F1、F2及BC1F1中的分离比例符合孟德尔遗传规律;与种内杂交不同,无蔓中国南瓜与蔓生异种南瓜材料的种间杂交一代表现出节间变长的倾向,表现为不完全显性遗传;通过种间杂交,可将中国南瓜特有的无蔓性状转育到美洲南瓜及印度南瓜中,创造全新的种质资源。
In order to inquire the meaning and feasibling on transfer the vineless character from C.moschata into C.maxima and C.pepo,the interspecific crossing between C.moschata materials with vineless character and C.maxima materials or C.pepo materials was conducted,we studied the interspecific genetic development on vineless character by the RAPD molecular marker and field investigation.Genetic performance of the vineless character of Cucurbita moschata in three mainly cultivated species in Cucurbita was studied in this paper.The results showed that the segregation ratios of the vineless character in F 1 group,F 2 group and BC 1 F 1 group of the interspecific hybrids fit the Mendelian law.It was different from intraspecific hybridization that the first filial generation between vineless C.moschata and the other vine pumpkin species showed that the internode elongated and the inheritance belonged to incomplete dominant inheritance.The unique vineless character of C.moschata was transferred to C.pepo and C.maxima by the means of interspecific hybridization and the brand-new germplasm resources were created.
出处
《中国农学通报》
CSCD
北大核心
2011年第13期219-222,共4页
Chinese Agricultural Science Bulletin
基金
山西省科技攻关项目"优质抗病西葫芦新品种选育"(2006031031-2)
山西省农业科学院青年基金项目"美洲南瓜抗病性改良和RAPD标记分析"(YQN0606)
关键词
中国南瓜
美洲南瓜
印度南瓜
无蔓南瓜
种间杂交
Cucurbita moschata Duch.
C.pepo L.
C.maxima Duch.
vineless pumpkin
interspecific hybridization
