Study of virus resistant ability and adaptation of hybrid combinations tomato in Spring-Summer crop season
2011
Nguyen Hong Minh; Ha Viet Cuong
From 66 hybrid combinations (received from 2 top cross systems: 1`7 x 3 and 15x1), 18 prospected combinations was selected. They were estimated virus resistant ability by two methods: Artificial and natural virus infection in the hot condition (Spring-summer crop season). Result in many combinations which express high resistant (HR) and resistant (R) ability as: B06, B26, B36, E7, B33, E6 and some medium resistant combinations. Generally estimated many traits about growth, fruit-set, yield found out: combination's suitable ability reducing in Spring-summer crop season (compare with Autumn-winter crop season) cause of decreasing fruit set and virus resistant ability. the preeminent hybrid combinations haven't got only food virus resistant expression but also high yield, early - medium maturity, high quality more than Savior (introduced variety) in Spring-summer crop season
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