Tablegrapes Contrast Experiments And Boilogy Characteristic Research

Grape is one of the main fruits in the world. In China, the grape growth gives priority to tablegrape and the yield of our tablegrape accounts for 34.7% of the yield of the world. But the varietal composing of our tablegrape is not rational. Jufeng takes more than 80% of all. So its necessary to introduce new varieties into China and carry through territorial contrast experiments among them in introduction area to screen out good varieties.We introduced 18 grape varieties into the practice farm of Taishan Vocational Technology Institute. Their biology characteristic, fruit character, fruit quality, resistance to diseases, tolerance to winter hardness, yield and photosynthesis characteristics were compared with each other. And the results showed:1 Daliliuyuezi and Jingxiu rank to rareripe varieties; Meirenzhi, Huangjiaqiutian, Hongti and Baoshiwuhe rank to serotinous varieties.2 The appearance of Meirenzhi, Shifuluosha and Huangjiaqiutian was better; while the sapor of Putaoyuanhuanghou, Wuhebaijixin and Shifuluosha was better.3 The resistance to diseases of Shifuluosha was the best, the second Jufeng. Some of the others resisted only one disease, some resisted two diseases but their fastness were feeblish.4 At aspect of tolerance to winter hardness, Shifuluosha, Daliliuyuezi, Hongyuni, and Putaoyuanhuanghou behaved well.5 The yield of Jufeng, Lizhamate, Jingxiu and Putaoyuanhuanghou behaved better.6 The net photosynthetic rate of varieties which yield were upper were upper too. So the two parameters have definite pertinence. The photosynthetic parameters of Lizhamate, Hongti, and Jingxiu behaved better than Jufeng, the main variety in Tai'an.In all, the quality, colour, sapor, and resistance to adversity of Shifuluosha was better than the others, including Jufeng. It was a good variety and was...