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首页> 外文期刊>Biotropia: the Southeast Asian journal of tropical biology >GROWTH AND DEVELOPMENT OF Fimbristylis miliacea (L.)Vahl
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GROWTH AND DEVELOPMENT OF Fimbristylis miliacea (L.)Vahl

机译：纤毛不动杆菌的生长与发育

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This experiment was conducted in the glasshouse of Universiti Putra Malaysia, to determine the growth and development of Fimbristylis miliacea (L.) Vahl. Twenty F. miliacea seeds were surface sown in ten plastic buckets of 18 cm diameter filled with 3 kg soil. After germination only one plant/bucket was retained. Time of first seedling emergence, time and number of leaves appearing until first tiller formation, time of tiller formation, first inflorescence, the first 10 inflorescences appearance and their maturity were recorded for each plant. Plant height and the number of inflorescence per plant was recorded weekly for up to 4 months after sowing. The first ten inflorescences for each plant were tagged after emergence, subsequently mature inflorescences were collected and the numbers of spikelets/inflorescence, seeds/inflorescence, seeds/ plant and 1000 seed weight were determined. Statistical analysis was performed as complete randomized design on weekly observed plant height and inflorescence number using the SAS statistical software and means were tested using Tukey’s studentized range test at the 5% level of probability. Fimbristylis miliacea seedlings emerged at 3 days after planting of seeds. Approximate times required for the sequential production of 10 leaves, tillers, first 10 inflorescence and their maturity were 28 days after emergence (DAE), 35 DAE, 49 DAE, 63 DAE, respectively. Plant height increased rapidly from 3-8 WAE and maximum plant height (64.05 cm) was attained at 10 WAE. This species had three important growth stages: a slow growth stage during the first 4 week after emergence (WAE); a rapid growth stage from 4-9 WAE; and finally, a maximum growth stage from 9-17 WAE. Within this first 4 weeks after emergence would be the most appropriate time for controlling this species with early post emergence herbicides. Each F. miliacea plant produced on average of 2.3 tillers/plant and a total of 134 inflorescences, with 84 inflorescences/plant ripening within this period. Each inflorescence comprised of 48 spikelets with 511 seeds and matured after 3 weeks of emergence. Total seeds/plant and 1000 seed weight were 42,275 and 0.035 g, respectively. Time required for seed ripening was 76 days after emergence.
机译：该实验是在马来西亚布特拉大学的温室中进行的，以确定Fimbristylis miliacea（L.）Vahl的生长和发育。在十个直径18厘米，装有3公斤土壤的塑料桶中表面播种20株粟米镰刀菌种子。发芽后仅保留一种植物/桶。记录每株植物初生苗的时间，直到第一次分till形成之前出现的叶子的时间和叶片的数量，分er形成的时间，第一次花序，前10个花序的出现及其成熟度。播种后长达4个月每周记录一次株高和每株植物的花序数。出苗后标记每种植物的前十个花序，随后收集成熟的花序，并确定小穗/花序，种子/花序，种子/植物的数量和1000粒种子的重量。使用SAS统计软件，对每周观察到的株高和花序数进行完全随机设计的统计分析，并使用Tukey的学生化范围测试以5％的概率测试均值。种子播种后第3天，出现了Fimbristylis miliacea幼苗。依次生产10片叶子，分till，前10个花序及其成熟所需的大约时间分别是出苗（DAE）28天，35 DAE，49 DAE，63 DAE。株高从3-8 WAE迅速增加，在10 WAE时达到最大株高（64.05 cm）。该物种具有三个重要的生长阶段：出苗后前4周的缓慢生长阶段（WAE）;从4-9 WAE的快速增长阶段;最后是9-17 WAE的最大增长阶段。在出苗后的最初4周内，将是使用出苗后早期除草剂控制该物种的最合适时间。在此期间，每株纤毛镰刀菌平均生产2.3个分ers /株，共产生134个花序，其中84个花序/株成熟。每个花序由48小穗和511种子组成，出苗3周后成熟。种子/植物总重量和1000种子重量分别为42,275和0.035 g。种子成熟所需的时间是出苗后76天。

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