The Research on Flowering and Pollen Dissemination Regularity of Two Main Cultivated Walnut Varieties in Xinjiang
In order to reveal the regularity of walnuts' flowering and pollen dissemination and to provide basis for improving effects on their pollination and fecundation and arrange pollination trees scientifically,a study was carried out on the blooming phenophase,pollen viability and the regularity of pollen dissemination of the main cultivated walnut varieties in Xinjiang.Using two main-cultivated early bearing walnut varieties ‘Xinxin 2' and ‘Wen 185' in Xinjiang as materials,the authors computed the quantities of pollen,measured the pollen' s vitality,observed the blossom phonological and measured the quantities of pollen dissemination in total and in a day during the florescence.The results indicated that the numbers of anther in every bud of ‘Wen185' and ‘Xinxin2' had average 77000 and 71400 grains respectively.The two main cultivated varieties' quantity of pollen dissemination was consistent in spatial direction:south＞ east＞ west＞ north＞ internal successively; for the same direction,it was central＞ internal＞ outside.The optimum temperature about the two main varieties' pollen dissemination was 20℃ to 24℃.The male and female flowers' flowering phases of ‘Xinxin2' and‘Wen185' were synchronization,which were about 4 days.The flowers of ‘Xinxin 2' could be self-pollinated under natural conditions,but the female flowers of ‘ Wen185' lost its receptivity,so failed to be self-pollinated.The temperature played an important role in walnuts' pollen dissemination.There was difference in pollen dissemination when the male flowers distributed in different spaces of tree crown.
NETL
NSTL
万方数据
维普
