The multi-plants cross and continuous several generations saturated backcross were made with a liguleless line P178/lg as the donor and Chang 7-2, Zheng 58 as recurrent parent. Three elite liguleless inbred lines including Zong 58/lg, Zheng 58/lg, and Chang 7-2/lg were selected. The results of analysis on the yield combination ability showed that the general combining ability of line Zong 58/lg was higher than the others and the special combining ability of two cross combinations, Zheng 58/lg×Chang 7-2, Zheng 58× Chang 7-2/lg were high. The results of crossing tests also showed that the hybrids from both liguleless lines had more upright leaves, poorer lodging resistance and weaker heterossis, while hybrids between ligules and liguleless lines had ideal plant type with smaller stem leaf angles and tassel branches angles, upright and narrow leaves, lodging resistance, stronger heterossis and higher yield. Based on the maize heterosis patterns, the cross method that using ligules×liguleless was one of efficient ways to breeding new maize varieties with density type.
NETL
NSTL
维普
万方数据
