Quality Evaluation For Softwood Cutting Seedling Of Transgenic Hybrid Poplar741 And Rejurenation By Tissue Culture

Aiming at the characteristic of hardly taking root using cuttage for Transgenic Hybrid Poplar741, bring forward a plan adapting to growing asexual seedlings: cuttage using sunshade and intermittent spray, and cuttage using moving canopy but not transplant. Tissue culture and multiform cuttage combine to an all-around and complete system of growing seedlings for Transgenic Hybrid Poplar741. Have the cottage stock quality in different month discrepancy ?Is need of production satisfied with? These questions are key of popularizing. Therefore for complete system of growing seedlings for Transgenic Hybrid Poplar741. In this paper , the cottage stock quality of cuttage stock of Transgenic Hybrid Poplar741 Carrying Two Insect-resistant Genes have been studied.In the part , tissue culture for buds, tissue culture for leaf , propagation shoot and mensuration of hormone have been studied . And material come from different part of mature white poplar mutiplication, (1)The nursery stock of cuttage grows fastest in May, but the nursery stock splits up greater, the nursery stock of cuttage grows comparatively slow in August, but the nursery stock splits up lower, the nursery stock comparatively neat to grow too. (2)The laws of develop of the nursery stock of cottage in different month is same after they are transplanted. And after a year, the growth difference become unconspicuous in the nursery stock of cottage , the quality the nursery stock is better in May. We contrast light index of different nursery stock. The result show that the Pn of the nursery stock in July and August is higher than that in May and June, and the deference haven't reached 0.05 level, they haven't reached marked level.(3)Under natural state, nursery stock of cuttage assure ink ability store the difference in different month, early nursery stock of cuttage protect water to be ability strong, is it injure low temperature light to survive the winter. Nursery stock of cuttage is it grow ability the difference stores in to resume after desiccating different month, The quality of the nursery stock is better in May, the nursery stock still has vigor after desiccating for 5 days in May.