blossom bud
5.The germination percentage of seeds, the percentage of seedling survival after drought control, DRI can be the major indexes of drought resistance identification within germinating, seedling, blossom and filling period. The length of embryo-bud and dry weight of embryo-shoot;
8.In 3 years in which beginning date of 10℃ was early,the accumulated temperature was high,sunshine was sufficient,average growth period of apple began more than 4d earlier,leaf unfolding prime and blossom telophase began 6 to 8 d earlier,every growth period in the most early year 2004 was 13 d earlier than the latest year 1993,especially the bud opening and blossoms telophase were 21 to 25 d earlier.
