Effects of Basta on Tissue Culture Plantlet of Different Cassava Cultivars (Lines)
The research focused on the rooting,elongation of stem and survival rate of single bud stem from 11 cassava cultivars(lines) which grew in culture medium containing basta with different concentration,to determine the growth selection pressure of basta to cassava and select more basta-tolerant cultivars(lines).The results showed that the number of root,the length of stem and the survival rate were decreased with the increased concentration of basta.When the concentration of basta was 0.9 mg/L,root number(1.06 per plant),stem length(1.3 cm per plant) and survival rate(74%) of cultivar SC124 was significantly higher than other cultivars(lines),expressed better resistance to basta.The screening concentration of basta to cassava tube culture plantlets was between 0.6 mg/L and 0.9 mg/L.