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Seed,cutting and air-layering reproductive inefficiency of noxious woody vine merremia biosiana and its implications for management strategy

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Frontiers in Biology 2009年第3期4卷 342-349页

作者： Mingguang LI Haiyang LIU Fenglan LI Xiuyuan CHENG Bin GUO Zhiwei FAN State Key Laboratory of Biocontrol Sun Yat-sen UniversityGuangzhou 510275China Environment and Plant Protection Institute Chinese Academy of Tropical Agricultural SciencesDanzhou 571737China

merremia boisiana(Gagnep)van *** a noxious fast growing woody vine and is able to grow overtop other plants,causing the death of plants underneath and forming monospecies *** formulate management responses,we assessed its seed and vegetative reproduction efficacy through indoor and field *** number of flowers counted from bagged infructescences in Guangzhou ranged from 25 to 172,with an average of *** the seeds of bagged infructescences had shown that there were only 1.58 hard testa seeds in each *** vitality tests using red ink indicated that only 68.6%of hard testa and filled seeds were *** emergence rate of scarified hard testa seeds in the sand bed was 31.96%.Under imitated natural conditions,8%of hard testa seeds could germinate,and 9%still retained their germination potential in one ***,seedlings should be monitored and removed in a timely fashion after any attempt of *** soil or transplanting plant from infested patches should be strictly prohibited at least for several *** considered,an infructescence contributed 0.3 *** investigation in the field found no seedlings either inside or at the perimeter of the patch,suggesting scant expansion by means of seed ***,the elimination effort could be focused on a relatively restricted scale of *** 630 cuttings of young shoots,old shoots and old lying shoots with or without growth regulators,there were only four(or 0.63%)established ***-layering shoots all died in two *** cuttings and airlayering reproduction indicated that regeneration from fragments of removed stems or accidentally dropped ones was quite unlikely,and thus mechanical removal was safe.

关键词： merremia boisiana seed vitality germination rate vegetative reproduction management

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