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首页> 外文期刊>Genetic Resources and Crop Evolution >Azuche, Hymenachne amplexicaulis (Rudge) Nees, forage genetic resources for floodplains in tropical Mexico.
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Azuche, Hymenachne amplexicaulis (Rudge) Nees, forage genetic resources for floodplains in tropical Mexico.

机译：Azuche，Hymenachne amplexicaulis（Rudge）Nees，在热带墨西哥觅食洪泛区的遗传资源。

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摘要

Azuche Hymenachne amplexicaulis (Rudge) Nees is a C3 grass native to tropical flooded areas in South and Central America with 2n=2x=24 chromosomes. During 2002 and 2003, the Graduate College for Agricultural Sciences (CP) and the Mexican Institute for Forestry, Agriculture and Animal Production Research (INIFAP) organized an expedition to collect the genetic diversity of this species within tropical Mexico, in order to preserve and study it under nursery conditions. The collection was performed from Puerto Vallarta to Tapachula on the Pacific and from Palizada, Campeche to Veracruz on the Gulf of Mexico coast, and also crossing sections through the Tehuantepec isthmus and through the Sierra Madre de Chiapas. Ninety sites were sampled, on each, 25 tillers were collected, tagged and stored in a commercial soil mix until establishment of individual plants within 6 l pots. The largest Azuche prairie observed had a 10 ha surface, with the grass limited to small surfaces of up to 0.25 ha. It was not found on places with salty water, even seasonally. The Pacific coastal side is less abundant in niches for this species. Producers' experience indicated that this grass is beneficial for milk production compared with other forage grasses, mainly C4, growing in flooded areas. Initial studies of genetic diversity showed wide morphological variation for sprouting ability, leaf width and length among samples. Azuche diversity showed good potential production attributes for farm and wild animals, under flooding tropical savanna conditions..
机译：Nezus（Azuche Hymenachne amplexicaulis（Rudge）Nees）是C3草，原产于南美和中美洲的热带水灾地区，具有2n = 2x = 24个染色体。在2002年至2003年期间，农业科学研究生院（CP）和墨西哥林业，农业与动物生产研究所（INIFAP）组织了一次考察活动，以收集热带墨西哥内该物种的遗传多样性，以进行保存和研究。它在托儿条件下。收集工作从瓦拉塔港到太平洋的Tapachula以及从墨西哥的Palizada，坎佩切州到墨西哥湾沿岸的韦拉克鲁斯进行，还穿过Tehuantepec峡峡和Siapa Madre de Chiapas。取样了90个地点，每个地点收集了25个分till，贴有标签并存储在商业土壤混合物中，直到在6升盆中建立单个植物为止。观察到的最大的阿祖什大草原面积为10公顷，而草被限制在不超过0.25公顷的小面积上。在有咸水的地方，甚至在季节性都没有发现。太平洋沿海一带的生态位较少。生产者的经验表明，与在洪灾地区生长的其他饲草（主要为C4）相比，这种草对牛奶生产有益。遗传多样性的初步研究表明，样品之间发芽能力，叶宽和长度的形态差异很大。在洪水泛滥的热带稀树草原条件下，Azuche的多样性显示出对农场和野生动物良好的潜在生产属性。

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