Comparison of Biological Characteristics of Different Grape Varieties Grown in Guangzhou
By combining field natural surveys with laboratory analyses,the node position of leaf shedding,branch lignification,and growth status in 9 grape varieties were investigated,as well as the growth potential,germination rate,and soluble solids of 7 different rootstocks(including self rooted seedlings)of Shine Muscat at different ages.The results showed that the main cultivar'Kyoho'had the highest leaf node position and leaf shedding rate,significantly higher than the other 8 cultivars.The main variety'Shine Muscat'had the lowest leaf node position and lower leaf shedding rate,second only to the lowest'Dong Fang Zhi Xing'.The leaf nodes and leaf shedding rate of the other main variety'Xia Hei'were in the middle.In terms of growth,'Xia Hei'had the highest growth rate,while'Han Xiang Mi'had the lowest.For different rootstocks of Shine Muscat,the stem thickness of the self rooted seedlings is the smallest and the growth is the weakest.Grafting seedlings can improve the growth of Shine Muscat to varying degrees.The germination rate of'Kang Zhen Yi Hao'Shine Muscat is the highest,and the soluble solids content of'Beida'and'1103P'rootstocks Shine Muscat is the highest,significantly higher than those of Shine Muscat with other rootstocks.This study aims to provide theoretical basis and practical guidance for the introduction,screening,and evaluation of grape varieties in Guangdong by investigating indicators such as leaf shedding,growth,germination rate,and soluble solids content of different grape varieties.