Effect of developmental stage on rooting of 7 peach cultivars by hardwood cutting
To screen the optimal period for hardwood cutting of different peach cultivars,and provide technical supports for the mass production of cutting seedlings of high-quality peach cultivars in northern Guangxi,sev-en peach cultivars including Nongshenpan,Chunyan,Shahong,Zhonghuafutao,Ribendahongtao,Menghuan-fushi and Siyuehong were used as materials to conduct hardwood cutting in October,November,December and January.The results showed that Shennongpan,Chunyan,Shahong and Hongfushi displayed the highest roo-ting rates in November,and the rooting rates of Zhonghuafutao and Ribendahongtao peaked in October,while Siyuehong showed no difference in rooting rate among four periods of time.The rooting effects were integrat-edly evaluated by membership function based on rooting rate,root number,root length and root diameter.E-valuation indices indicated that rooting effects varied significantly across different cultivars in the same cutting period,while there were also significant differences in rooting effects across different cutting periods in same cultivar.However,November was considered as the optimal rooting period for all cultivars.This research can provide scientific basis for cutting propagation of different peach cultivars.
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