热带、亚热带玉米自交系与温带玉米自交系的配合力和遗传参数分析

以4个优良热带、亚热带玉米自交系为测验种，9个优良温带玉米自交系为被测系，按NCⅡ遗传交配设计配制36个杂交组合，在云南省昆明、曲靖和德宏3个不同生态条件下进行田间鉴评，研究其9个性状的配合力及遗传参数。结果表明：热带自交系CRN3760—1-2_2．1．1-2的产量GCA效应值最高，其次是YML46、[阿1112×T（5003×云146）]##-1—1—1—1-B、2870263-4-2-1-B-B—B-B．B、IRF321、8723、23X等自交系，都具有显著的产量GCA正效应值，是组配强优势杂交组合的优良自交系。杂交组合CRN3760-1_2_2-1—1-2×23X、CRN3760—1-...

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Published in西南农业学报 Vol. 30; no. 3; pp. 497 - 504
Main Author 段智利 杨晓婷 陈洪梅 希从芳 汪燕芬 王晶 李建宾
Format Journal Article
LanguageChinese
Published 云南农业大学农学与生物技术学院,云南昆明,650201%云南省农业科学院粮食作物研究所,云南昆明,650205 2017
Subjects
亚热带玉米
杂种优势
热带
种质
遗传参数
配合力
Combining ability
杂种优势
Germplasm
种质
热带、亚热带玉米
遗传参数
Genetic parameter
配合力
Tropical and subtropical maize
Heterosis
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Summary:以4个优良热带、亚热带玉米自交系为测验种，9个优良温带玉米自交系为被测系，按NCⅡ遗传交配设计配制36个杂交组合，在云南省昆明、曲靖和德宏3个不同生态条件下进行田间鉴评，研究其9个性状的配合力及遗传参数。结果表明：热带自交系CRN3760—1-2_2．1．1-2的产量GCA效应值最高，其次是YML46、[阿1112×T（5003×云146）]##-1—1—1—1-B、2870263-4-2-1-B-B—B-B．B、IRF321、8723、23X等自交系，都具有显著的产量GCA正效应值，是组配强优势杂交组合的优良自交系。杂交组合CRN3760-1_2_2-1—1-2×23X、CRN3760—1-2-2—1—1-2x2870263-4-2—1-B．B．B—B-B、CRN3760—1．2-2．1—1-2x[阿1112×T（5003×云146）]#}}-1—1-1—1一B和YMIA6×8723具有显著的产量SCA效应值，有一定的增产潜力，可作为潜势组合在云南进一步鉴定其丰产性和稳定性。9个性状的遗传以加性基因效应为主，轴粗、百粒重和出籽率的狭义遗传力都大于55．2％，其变异由遗传引起的比重较大，宜在早代进行选择．穗粗、秃尖和穗行数的狭义黄传力低于23．2％．宜在晚代盎择。
Bibliography:Tropical and subtropical maize; Germplasm; Combining ability; Heterosis; Genetic parameter
In this study, 36 crosses were made with four tropical, subtropical maize inbred lines as test-crossed and nine temperate inbred lines as tested ones by NCII genetic design, and were evaluated in Kunming, Qujing and Dehong of Yunnan province. General combining a- bility （GCA）, Special combining ability （SCA） and genetic parameters of nine agronomic traits of these inbred lines and crosses were recor- ded. The results showed that the CRN3760-1-2-2-1-1-2 （ tropical maize inbred line） has the highest yield GCA, next were YML46, [ A1112 × T（5003× Yun146） ] ##-1-1-1-1-B, 2870263-4-2-1-B-B-B-B-B, IRF321, 8723 and 23X, and they were had significant at P ≤0.05. A- bove inbred lines could be used in developing the crosses with higher heterosis. Four cross combinations with having significant higher yield SCA and high yield potential were selected, which were CRN3760-1-2-2-1-1-2 × 23X, CRN3760-1-2-2-1-1-2 × 2870263-4-2-1-B-B-B-B-
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2017.3.003