Seed Germination Characteristics of Different Provenances of Pinus tabulaeformis
Wang Yan · Xibei Linxueyuan xuebao · 2015
Genetic variations of Pinus tabulaeformis provenances were studied to determine seed allocation zones,and more importantly,to provide genetic basis widely and good quality breeding population for high generation.There were 30 provenances of Pinus tabulaeformis including seed orchard,seed production stand and planted forest(controls)from five seed zones.Seed length,width,thousand seed weight,seed plumpness,germination rate,germination potential,germination index,germination time and nursery germination rate were analyzed.The results showed that differences between different provenances in seed length,seed width,thousand seed weight,seed plumpness,germination rate,germination potential,germination index,germination time and nursery germination rate were significant.Seed length,seed width,thousand seed weight,germination rate,germination time were largely in line with the geographic variation law.Germination indices were positively correlated with seed plumpness,germination rate,germination potential and nursery germination rate;thousand seed weight were positive correlated with seed length and seed width.According to seed germination index of P.tabulaeformis,provenances Pingquan of Hebei(seed orchard,seed production stand and planted forest),Zhengning of Gansu,Fuping of Hebei and Xixian of Shanxi performed excellently.