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Studies on the Physiological Efi'cct on Nutritive-shoot of Determinate Tomatoes

Zou Zhirong Lu Guoyi(Department of Horticulture)  
In the trials with two determinate tomato cullivars-Beijing No. 10(vigourlcss growth) and Zao fcng (vigorous growth), the second lateral branch below the first inflorescence on the main stem was kept as a nutritive-shoot .The results showed that plant with nutritive-shoot grew fast and had a large leaf arcs ,a strong root activity, a high assimilation rale and distribution ratio of I4C photosynthctic products to fruit and root, and both early yield and total yield increased as compared with the control, whose nutritive-shoot was removed.Beijing No. lOvvith 3-4 leaves in nulrilivc-shoot increased the casly yield by 8.8%-13.8%,and total yield by 7.5%-5.8%,whilc Zao fcng with 2-3 leaves in nutritive-shoot increased the early yield by 4.8% and total yield by 11.9%-8.5% as compared with the control. If the nulrilivc-shoot was allowed to grow freely, the yield would decrease.
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