摘要
对１９８１～１９９０年河北省玉米杂交种的应用和区域试验资料进行了综合分析。结果表明，河北省玉米杂交种种质基础相当狭窄，塘四平头、获嘉白马牙和美国血缘种质的播种面积占主要玉米杂交种的８３．８％．黄早四、Ｍｏ１７、自３３０和获白四大自交系１万ｈｍ２以上，占杂交种面积的５０％左右。选系的方式以二环系为主。河北省生产用玉米杂交种主要来自周围相邻省份。１９９０年河北省自育杂交种播种面积只占１６．９％，自选自交系为１２．０％．单交种更加普及，三交和双交种则大大减少。期间，全省玉米籽粒产量的育种进展缓慢。
The germplasm Base in Hebei province is reviewed by the analysis of maize hybrids grown from 1981 to 1990 and the regional trials from 1980 to 1991. It is demonstrated that the parent inbred lines related to Tand Si Ping Ton, Huojia White Dent and the American germplasms covered 83. 8 per cent of the total main maize hybrids. 4 major inbred lines (i.e.Huang Zaosi, Mo17, zi330 and Huobai) were utilized as parents in hybrids for about 50 per cent of the tatal hybrids grown on more than 10,000 hectares. The second-cycle lines were the major type of new inbreds developed. The maize hybrids grown on Hebei province were maily from the provinces around. The hybrids and inbred lines developed in Hebei provivce were 16. 9 and 12. 0 per cent, respectively. Single-cross hybrids were more widely grown, while three-way cross and double-cross hybrids were less used in the province. There were no evident progresses in grain yield breeding during the period covered in this paper.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
1994年第2期88-94,共7页
Journal of Hebei Agricultural University
关键词
玉米
自交系
杂交种
种质基础
Hebei Province
Maize
Inbred line
Hybrid
Germplasm base
