Preliminary Study on Grafting Compatibility of Different Rootstock-scion Combinations of Walnut
Yunxin and Yangbi,which had been planted in Guizhou for more than 10 years and have poor adaptability,were used as rootstocks for high grafting with high-quality walnut varieties such as Qianlinhe 1,Xuening Hong,and Qianlinhe 5.The improved varieties with suitable different interstocks of walnuts were screened out.The branch grafting method was used for high grafting and the compatibility of each rootstocks and scions were comprehensively evaluated according to grafting survival rate,grafting interface healing status,growth status,and physiological characteristics.The results showed that the survival rate and growth of branch grafting of the combination without intertstocks were higher than those with interstocks.There were significant differences in the survival rate,length and diameter of new branches between the combinations without intertstocks and those with interstocks.When the interstock was Yunxin,the scion with the highest survival rate and best growth is Qianlinhe 1 with the survival rate of 38.24％,the new branch length of 124.62 cm,and the new branch diameter of 2.56 mm.When the middle rootstock was Yangbi,the scion with the highest survival rate was Xuening Hong with the survival rate of 38.34％,and the scion with the best growth was Qianlinhe 1 with the length of 113.1 cm and the new branch diameter of 2.38 mm.When the interstock was Yunxin,the PPO content of the scion Qianlinhe 5 was significantly different from that of Xuening Hong and Qianlinhe 1,the soluble sugar and soluble protein content of the three scion varieties were significantly different from each other,and the soluble starch content of Qianlinhe 5 was significantly different from that of Xuening Hong and Qianlinhe 1.When the interstock was Yangbi,there was significant difference in PPO and soluble sugar between the scion variety Xuening Hong and Qianlinhe 1 and Qianlinhe 5,and significant difference in POD between Xuening Hong and Qianlinhe 1.The difference in soluble starch among the three scion varieties was also significant.In the combination without interstocks,there was significant difference in soluble protein content among the three scion varieties,while the difference in PPO content was not significant.The POD differences between the scion varieties Qianlinhe 5,Xuening Hong,and Qianlinhe 1 were significant,while the differences in soluble sugar and soluble starch content between the scion varieties Xuening Hong and Qianlinhe 1 were significant.The order of affinity of different rootstock and scion combinations of walnuts was as follows:Qianlinhe1/Juglans sigillata＞Xuening Hong/Juglans sigillata＞Qianlinhe 1/Yangbi/Juglans sigillata＞Qianlinhe 5/Juglans sigillata＞Qianlinhe 5/Yangbi/Juglans sigillata＞Qianlinhe 1/Yunxin/Juglans sigillata＞Xuening Hong/Yangbi/Juglans sigillata＞Qianlinhe 5/Yunxin/Juglans sigillata＞Xuening Hong/Yunxin/Juglans sigillata.
walnutinterstockbranch graftingtop grafting with excellent cultivargraft compatibility
万方数据
维普
