Analysis on the numbers of lfower of clones of Pinus massoniana in second generation seed orchard
Twenty seven, twenty eight and twenty six clones of Pinus massoniana were randomly selected from the corresponding region I and region V in the Seed Orchard of Guiyang County and region III of the Seed Orchard of Chengbu County in 2012. The stub observations and analyses on the diameter, crown, numbers of male and female flower of designation plants were performed in 2012 and 2013. The results show that among the P. massoniana clones growing different sites, with different tree age and different clone species, there were significant differences in average values of male and female flower numbers, also obvious differences in changing of average value;There were significant or very significant differences in numbers of male and female flower of different clones, and very significant differences in that of different years;The interaction effects of clone-year of female flower in the Seed Orchard of Guiyang County were significant, and no significant differences in other interaction effects;There were very significant differences in numbers of female flower in different place, and no significant differences in the amount of the male flower ball;There were no significant differences of numbers of male and female flower in the interaction effects of different clone-year;There were the positive correlation among the numbers of male and female flowers to the crown and diameter, there was the negative correlation between numbers of male and female flowers inter-year and within year;There were the positive correlation between male and male flowers or between female and female flowers inter-year;there were significant differences in contribution rate of male and female flowers of different clones, and about 10%of them surpassed the average contribution rate by 2 to 3 times, and 20%of they reached about 50.00%.
Pinus massonianasecond generation seed orchardclonesfemale flowermale flowernumbers of flower
NETL
NSTL
万方数据
维普
