摘要
对福建华安县西陂国有林场4年生木荷种子园中20个结果无性系进行生长、结实量及果实特征调查。结果表明:地径、胸径、树高、枝下高、结果枝数和结果数在无性系间存在极显著差异(p<0.01),冠幅、叉干数存在显著差异(p<0.05),其中无性系C4的结果枝数最多,达10.67个,较均值多1.02倍;无性系A1的结果数最多,达513个,较均值多2.17倍。果宽、果长、单果重在无性系间也存在极显著差异,其变幅分别为13.43~17.79 mm,10.86~14.81 mm和0.70~1.45 g。20个无性系中,60%无性系果实已成熟,无性系种实被害率为25%。结果数与结果枝数、叉干数分别呈极显著和显著正相关。对20个木荷无性系各指标进行隶属函数分析,发现与之关系最为密切的果实形态指标、生长指标和结实指标分别为单果重、树高、结果枝数。按30%的入选率,从测定的20个无性系初步选出了32、C_(22)、A_4、C_4、A_7、A_9等6个生长快、结实量高的木荷无性系。
Growth, fruit setting amount and fruit features of twenty fruit clones of 4-year-old Schima superba ＂seed orchard were carried out at Xipi National Forest Farm, Hua＇an, Fujian. The results showed that there were highly significant differences （p〈0.01） in diameters at ground level, diameters at breast-height （DBH）, tree height, clear bole height, fruiting shoot number, fruit number, and significant differences （p〈0.05） in crown width and stem bifurcation number, among clones. Of which, fruiting shoot number of the clone C4 was the highest, up to 10.67, 1.02 times higher than the average and the fruit number of the clone A1 was the largest, reaching 513, 2.17 times higher than the average. The fruit width, fruit length and single fruit weight were also highly significant differences among clones, and their ranges were from 13.43 to 17.79 mm, from 10.86 to 14.81 mm, and from 0.70 to 1.45 g, respectively. The 60% clones were ripened in the end of October 2015, and the fruit damaged rate was 25%. The fruit number was extremely significantly and significantly positively correlated with the number of fruiting shoots and the bifurcation number, respectively. By subordinate function analysis for each index, it was found that the most closely traits in fruit shape, growth and seed setting indices were the single fruit weight, height, the number of fruiting shoots. Under the selection rate of 30% for the twenty clones, the six clones, 32, C=, A4, C4, AT, Ag, with fast growth and high ＇fruit quantities were primarily selected.
出处
《热带作物学报》
CSCD
北大核心
2017年第2期213-217,共5页
Chinese Journal of Tropical Crops
基金
福建省自然科学基金资助项目"木荷育种群体开花结实及杂交特性研究"(No.2014J05035)
福建省林木种苗科技攻关五期项目"木荷核心育种群体构建与种子园高产技术研究"
国家林业局南方山地用材林培育重点实验室
关键词
木荷
无性系
种子园
生长性状
结实性状
vSchima superba Gardn.et Champ.
clones
seed orchard
growth traits
fruit setting traits
