摘要
通过选优，进行无性系测定表明：锥栗优树无性系在产量性状上有着极显著的差异，高产无性系是最低无性系产量的２倍，超过平均产量的５７．０３％，每年平均单株产量达５．９２ｋｇ，每亩产量可达２３６．８ｋｇ．根据生产力指数，将参试的１６个无性系分为４类，其中高产的无性系２个，遗传增益达４５．２０％；较高产无性系３个，平均遗传增益２３．５４％。
The clonal test indicated
thatthe Plus trees of henry chinkapin,Castanea henryi,varied very greatly in yield quantity.The
high yield clones bore twice as many nuts as the clonewith the lowest yield, and they
surpassed the mean yield of all the tested clones by 57.03 per-cent.The mean annual yield of
each individual plant amounted to 5.92 kg, making 3552.0 kgper ha,According to the yield
indices the 16 tested clones were divided into 4 groups. Two ofthe clones fell into the high
yield group with the mean genetic gain of 45.20 percent,Whereasthree belonged to the medium
yield group whose mean genetic gain was 23.54 percent. The ge-netic gain of all the 16 clones
approximated 32.20 percent.
出处
《经济林研究》
1995年第1期5-8,共4页
Non-wood Forest Research
关键词
锥栗
无性系
产量变异
选择
Castanea henryi
Plus tree
Clonal test
Yield variation.
