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带根苗与顶端扦插苗对马铃薯雾培原原种生产的影响
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摘要
采用双因素随机区组设计,研究带根苗与顶端扦插苗对"费乌瑞它""川芋117""川芋802"和"米拉"农艺性状和产量的影响,为优化雾培马铃薯原原种生产技术提供依据。结果表明,带根苗较顶端扦插苗具有较强的匍匐茎形成能力,且更早完成各形态器官的建设;4个品种的结薯率均呈"S"形曲线变化,且顶端扦插苗均滞后于带根苗5~8 d进入块茎膨大期;在单位面积产量方面,"费乌瑞它"和"川芋117"带根苗较顶端扦插苗分别增产6.1%和4.1%;"川芋802"和"米拉"顶端扦插苗较带根苗分别增产6.0%和34.4%;2种定植苗的单位面积粒数在品种间亦有此规律。对于"费乌瑞它"和"川芋117",优先考虑带根苗定植;对于"米拉"和"川芋802",优先考虑顶端扦插苗定植。
引文
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