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杂交父本象草Ｎ５１是对光照最为敏感的短日照作物，每日９ｈ，光照处理２～３周，能有效地诱导抽穗开花。象草的穗由分蘖穗和分枝穗组成，由于单株分蘖穗和分枝穗发育程度的差异和群体中个体间的差异致使Ｎ５１群体散粉期可达３０ｄ，散粉高峰期２周。母本Ｔｉｆｔ２３Ａ在南京能完成生育过程，开花期与播期有关，相关系数为０．８８６，群体散粉期与Ｎ５１同样有３０ｄ。由于亲本花期长，因此花期能很好地相遇、杂交、结实
Hybrid paternal elephant grass N51 is the most sensitive short-day photoperiod crop, which can effectively induce the flowering and heading at 9h daily and 2 ~ 3 weeks photoperiod. Grassy spikes were composed of tillering spikes and branch spikes. Due to differences in tillering and branching panicle development among individuals and differences among individuals in the population, the N51 population was found to have a loose powder period of up to 30 days and a loose powder peak of 2 weeks. The female parent Tift23A was able to complete the fertility process in Nanjing. The flowering stage was related to sowing date, with a correlation coefficient of 0.886. The population litter stage was similar to N51 for 30 days. Due to the long flowering parents, flowering can meet well, hybrid, strong