Abstract:

Application of virus-free potato minitubers is currently one of the most effective measures to increase yield in potato production. And the average yield increase range is between 40% and 80%; however, due to the fact of higher price of minitubers, it is difficult to apply significantly in actual production. A technology of producing potato minituber from pinnate with lateral bud by hormone induction has been studied based on the theory that the growth polarity of plant growing point meristematic tissue can be changed through hormone induction. The result found out that from the bud stage to early flowering period of virus-free potato plant, pinnate with axillary bud which is cut away from the lower part of plant is treated in a certain concentration of NAA, iodole acetic acid (IAA), iodole butyric acid (IBA) and - benzyl adenine (6-BA1), and minitubers for production purpose have been outputed by induction after 4 to 5 weeks' culture. Utilization of the technology based on in vitro axillary bud for potato production has the character of short production cycle, low-cost, easy-operation and high potato seed quality, which has eventually opened up a new way of producing virus-free potato minitubers.