CAJ | 학술논문

以授粉后具花闭合特性的紫茉莉为研究材料，通过在不同天气状况下作去花冠和存留花冠处理，观察花冠对花粉活力、柱头可授性及结实率等繁殖特性的影响。结果表明：紫茉莉自然存留花冠比去花冠的花粉活力、柱头可授性、柱头上的花粉数及柱头上花粉萌发率各指标达最高值的时间重叠性更强，并以阴天存留花冠的最强。存留花冠通过这种时间的重叠性来保证花粉在柱头上的萌发，产生了有利的繁殖适合度。越晚去花冠结实率越高，结实率呈现花闭合自然存留花冠＞花冠闭合期去花冠＞散粉初期去花冠＞花冠展开期去花冠的规律。因此，花冠对紫茉莉繁殖适合度具有利影响。紫茉莉花冠的存留提高了繁殖适合度，增强了对环境的适应能力。
이수분후구화폐합특성적자말리위연구재료，통과재불동천기상황하작거화관화존류화관처리，관찰화관대화분활력、주두가수성급결실솔등번식특성적영향。결과표명：자말리자연존류화관비거화관적화분활력、주두가수성、주두상적화분수급주두상화분맹발솔각지표체최고치적시간중첩성경강，병이음천존류화관적최강。존류화관통과저충시간적중첩성래보증화분재주두상적맹발，산생료유리적번식괄합도。월만거화관결실솔월고，결실솔정현화폐합자연존류화관＞화관폐합기거화관＞산분초기거화관＞화관전개기거화관적규률。인차，화관대자말리번식괄합도구유리영향。자말리화관적존류제고료번식괄합도，증강료대배경적괄응능력。
Mirabilis jalapa has permanent floral closure phenomenon after pollination.The effects of corolla on the reproductive fitness of M.jalapa in different weather conditions were studied.The results showed that the time syn-chronization about the pollen viability,the stigma receptivity,the number of pollen grains and the pollen germination ration on stigma to the top between natural corolla existing and corolla removing were different.The synchronization time of natural corolla existing was more than that of corolla removing.The effects of corolla on seed setting ratio at different bloom stages of M.jalapa in different weather conditions had a certain rule.The seed setting rates of differ-ent treatments from high to low presented rule below,natural corolla existing>corolla removing while floral closure>corolla removing while initial dehiscence>corolla removing while initial dehiscence>corolla removing while earlier flowering.In general the retention of closed corolla after pollination improved the reproductive fitness and enhanced its adaptation to the environment.