Effects of loose smut on Digitaria sanguinalis population depending on seedling emergence period
Effects of loose smut on Digitaria sanguinalis population depending on seedling emergence period
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DOI：
10.1016/j.actao.2009.01.009
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发表时间：
2009-05-01
影响因子：
1.8
通讯作者：
Verdu, Antoni M. C.
中科院分区：
文献类型：
--
作者：
Gallart, Montserrat;Teresa Mas, M.;Verdu, Antoni M. C.
研究了系统黑穗病真菌合生黑穗病菌（Ustilago syntherismae）对马地黄（Digitaria sanguinalis）种群形态、生长和繁殖力的影响，并考虑了寄主个体（队列）的出现时间，连续两年进行了评估。对血根草种群影响较大，97.2%的受感染植株被完全阉割。黑穗病菌显著降低了地上生物量（61.5%）、株高（23.7%）和基芽数（15.5%），显著增加了节数（12.9%）、分枝数（52.4%）和花序数（16.7%）。鉴于在研究的第二年，该队列是患病植物百分比变化的重要来源，我们的结果不支持黑穗病植物在花季出现较早的观点。因为苗期不是制约瓦病发生的因素。(C) 2009 Elsevier Masson SAS。版权所有，
Fungal plant pathogens can impact oil host fitness, The effects of the systemic Smut fungus Ustilago syntherismae on the morphology, growth and fecundity of the Digitaria sanguinalis population at the end of its annual cycle were assessed during two Consecutive years considering the emergence time of host individuals (cohorts). U. syntherismae had an important impact on the D. sanguinalis population, because most of the infected plants (97.2%) were totally castrated. Smut fungus significantly reduced aboveground biomass (61.5%), height (23.7%) and the number of basal shoots (15.5%) and increased the number of nodes (12.9%), ramifications (52.4%) and inflorescences (16.7%) of tile individuals. in view of the fact that the cohort was a significant source of variation in the percentage of diseased plants in the second year of study, our results do not support tile idea that smutted plants appear earlier in tile season. because tile time of seedling emergence was not a factor that constrained tile disease incidence. (C) 2009 Elsevier Masson SAS. All rights reserved,