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黄早四种群自交系(黄早四及其衍生系)是我国玉米育种的五大骨干杂种优势类群之一,建立在黄早四及其改良的衍生系(黄改系)基础之上,具有配合力高、株型好、耐旱耐瘠、适应性广等特点。统计分析山东省审(认)定的165个品种亲本遗传组成,有78个品种具有黄早四种群种质,占审定总数的47.3%。针对黄早四种群自交系及其组配的杂交种耐旱、质优、耐密、高产等特性,探讨在山东省玉米育种和生产上进一步应用的发展前景,提出山东省利用黄早四群种质的改良策略。
Huangzao four population inbred lines (Huangzao 4 and its derived lines) are one of the five backbone heterotic groups in maize breeding in China. Based on Huangzao 4 and its improved derived lines High combining ability, plant type, drought-resistant barren, wide adaptability and so on. Statistical analysis Shandong Province (identified) set of 165 varieties of parents of genetic composition, there are 78 varieties of yellow early four species germplasm, accounting for 47.3% of the total number of validation. According to the characteristics of drought-tolerant, high-quality, tight-tolerance and high yield of hybrids of Huangzao four population inbred lines and their combinations, this paper discussed the development prospect of further application in breeding and production of maize in Shandong Province. Improved strategy of group germplasm.