Effects of Warm Water and GA3 on Germination Traits of 7 years Cold-storing Pinus yunnanensis Seeds
The effects experiment of warm water and GA3 on germination traits of cold-storing 7 years Pinus yunnanensis seeds,has been conducted by applying the L9 (34) orthogonal design.The results showed that germination rate and speeds for treatment combinations were 8.6％ to 57.1％ and 0.3 to 1.7 days respectively,which has significant differences of germination percents between the TCs (P =2.43 E -11 ＜0.01).Warm water soaking seeds was the dominant factor influencing the germination percents which of soaking seeds for 12 h been significantly reduced germination percent (P =1.65E-14 ＜0.01),however,accelerated seed germination.The GA3 was the main factor affecting germination speed.The TC of cold water and 0.05 g/L GA3 soaking seeds increased the germination percent.Cold storage can be extended storing period of P.yunnanensis seeds.
Pinus yunnanensiswarm water soaking seedGA3 soaking seedgermination rategermination speed
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