导入大刍草基因改良玉米子粒饲用品质的分析  

Analyses of Feeding Quality of Improved Maize Breed by Implanting Teosinte Genes

作　　者：赖麟[1] 

机构地区：[1]四川教育学院生物系,成都610041

出　　处：《玉米科学》2007年第4期22-24,共3页Journal of Maize Sciences

摘　　要：用1年生墨西哥大刍草与人工合成的玉米G综合种进行远缘杂交,将其分离的6个稳定自交系和玉米亲本G综合种的5个品质性状进行对比分析。多元方差分析结果表明,导入大刍草优良品质基因对于改良玉米品系的粗纤维、粗脂肪、无氮浸出物和可消化总养分品质性状有显著的提高效应,粗蛋白含量无显著差异。通过5个品质性状的多元相关回归分析结果表明,可消化总养分与另4个品质构成性状有极显著的线性相关回归关系。用可消化总养分作为饲用玉米品质评价的综合指标有利于选育出高品质的饲用玉米优良品种。Five quality characters are analyzed comparatively and respectively between maize parent complex species and six stable self-strains segregated from the distant hybridization between one-year Mexico Teosinte and artificial selecting maize G complex species. The results from muhifactor variance analysis prove that the remarkable improved effects take place on the four quality characters including rough fiber, rough fat, non-nitrogen soak-out solution and total digestible nutrients of the improved maize strain breed by implanting Teosinte high-quality genes. However, no remarkable variance occurs to the content of rough protein. Further study by muhifactor relative regression analysis among these five characters shows that total digestible nutrients have a super remarkable linear regression relationship to the formation of the other four quality characters. The analyses point out that adopting total digestible nutrient as a comprehensive index to evaluate the quality of feeding maize will be beneficial to selecting high quality feeding maize breed.

关 键 词：玉米 大刍草 远缘杂交 品质育种 可消化总养分 

分 类 号：S513.03[农业科学—作物学]