VARIATION OF FLOWER OPENING AND CLOSING TIMES IN F1 AND F2 HYBRIDS OF DAYLILY (HEMEROCALLIS FULVA; HEMEROCALLIDACEAE) AND NIGHTLILY (H. CITRINA)
VARIATION OF FLOWER OPENING AND CLOSING TIMES IN F1 AND F2 HYBRIDS OF DAYLILY (HEMEROCALLIS FULVA; HEMEROCALLIDACEAE) AND NIGHTLILY (H. CITRINA)
复制标题
DOI：
10.3732/ajb.0900001
复制
发表时间：
2010-02-01
影响因子：
3
通讯作者：
Yahara, Tetsukazu
中科院分区：
文献类型：
--
作者：
Nitta, Kozue;Yasumoto, Akiko A.;Yahara, Tetsukazu
在开花植物中，授粉成功在很大程度上取决于花何时开始开花以及何时开始关闭。为了阐明影响大花萱草花开闭时间的遗传机制，我们获得了大花萱草（Hemerocallis fulva）和大花萱草（H.用数码相机观察了它们从开花到闭花的开花行为。对于开花时间，F1杂种是高度可变的，和F2杂种表现出双峰分布的开花时间与高峰在上午和晚上。杂种F_2早晚花比例不偏离1：1。对于开始到结束的时间，F1和F2杂种都在晚上显示出主高峰。F2代晚闭与早闭的比例不偏离3：1。这些结果表明，花的开放时间和开始关闭是由不同的主基因调控的。
In flowering plants, pollination success is strongly dependent on the timing of when flowers start to bloom and when they start to close. To elucidate the genetic mechanism influencing the timing of flower opening and closing, we obtained F1 and F2 hybrids of Hemerocallis fulva (a diurnally blooming species, pollinated by swallowtail butterflies) and H. citrina (a nocturnally blooming species, pollinated by nocturnal hawkmoths) and observed their flowering behavior from blooming to closing with the use of digital cameras. For flower opening times, F1 hybrids were highly variable, and F2 hybrids showed a bimodal distribution of flower opening times with peaks in both the morning and evening. The ratio of morning flowering and evening flowering among F2 hybrids did not deviate from 1 : 1. For the start to close time, both F1 and F2 hybrids were similar in showing the major peak in the evening. The ratio of evening closing and morning closing among F2 hybrids did not deviate from 3 : 1. These results suggest that the time of flower opening and the start of closing are regulated by different major genes.