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一、向日葵的开花规律向日葵的开花习性,与其它植物不同特点是同一花盘上的花,分批开,从始到终,不同品种,持续开花的时间不同,短的七天开完,多的九天左右。为了掌握向日葵的开花规律,为提高杂交授粉技术提供依据,用罗马尼亚油用向日葵和地方品种18～6为材料进行探讨。于现盘时每品种标记十株,开花时每日早上七～八时观察到开花结束为止。因两品种花期不
First, the law of flowering sunflowers Helianthus annuus habits, and other plants are different from the characteristics of the same flower on the disk, open in batches, from beginning to end, different varieties, continuous flowering time is different, short seven days to finish, more than nine days about. In order to grasp the law of flowering of sunflower and provide the basis for improving the pollination technology of hybrids, we use Romanian oil sunflower and local varieties 18 ~ 6 as materials. At the time of the current ten varieties of each marker, flowering seven to eight daily morning until the end of the flowering observed. Because two varieties of flowering is not