Analysis on Seed Traits and Seedling Growth Rhythms of Liquidambar formosana from Different Provenances
In order to screen high-quality Liquidambar formosana provenances,taking L.formosana from 11 different provenances as research materials,seed traits were compared and analyzed.Growth rhythms of seed-ling heights and ground diameters of L.formosana seedlings were observed by conducting light substrate seed-ling cultivation.Growth rhythms of seedling heights and ground diameters were fitted by Logistic equations.Cor-relation analysis among seed traits,growth indexes of seedlings and ecological factors was carried out.Results showed that there were significant differences among all seed traits of L.formosana from different provenances.1 000-grain weights of L.formosana seeds were 2.27-4.10 g,seed lengths were 4.19-6.10 mm,seed widths were 1.71-2.24 mm,length to width ratios of seeds were 2.31-2.94,seed wing lengths were 2.08-2.75 mm,seed wing widths were 1.80-2.26 mm and length to width ratios of seed wings were 1.12-1.38.There were ex-tremely significant differences in accumulative growths of seedling heights and ground diameters of L.formosa-na seedlings from different provenances.All rapid growth periods of seedling heights were from May 15th to Au-gust 15th,and all rapid growth periods of ground diameters were from May 15th to July 15th and September 15th to November 15th.Water and fertilizer management could be strengthened during rapid growth periods of seedlings.R2 of Logistic equations for seedling heights ranged from 0.984 to 0.998,and R2 of Logistic equations for ground diameters ranged from 0.960 to 0.993,both of which reached significant correlation levels.Growth rhythms of L.formosana seedlings could be fitted by Logistic equations.In sum,Nandan and Zhongshan prove-nances showed better growth performances than the other nine provenances.
万方数据
维普
