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首页> 外文期刊>Mycorrhiza News >Infectivity and efficacy of four native vesicular-arbuscular mycorrhiza fungi on sugar cane (cv. CO 419)
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Infectivity and efficacy of four native vesicular-arbuscular mycorrhiza fungi on sugar cane (cv. CO 419)

机译：四种天然水泡-丛枝菌根真菌对甘蔗的感染性和功效（c CO。419）

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摘要

The sugar cane (Saccharum officinarum L ) crop in many parts of India is cultivated on different soils, Most of these soils, particularly black soils, have low to medium P (phosphorous) content (up to 30 kg/ha). The P applied through fertilizers is fixed to a considerable extent, due to the presence of carbonates (5%-10%) in soil, Research carried out in the past few decades has well established that VAM (vesicular-arbuscular mycorrhiza) fungi can improve plant growth mainly through increased uptakeof P, especially in low-P soil (Bowen 1978). The positive growth response is usually slower in soils where applied P is fixed rapidly (Abbott, Robson, and Parker 1979). Although sugar cane is known to harbour VAM association naturally in its root systems(Chandrakant, Moore, and Hapase 1989), significant variations in its intensity in different soils were observed (Chandrakant, Zende, and More 1989) and in different varieties under the same filed soil conditions (Chandrakant, Moore, and Hapase 1989). Aneffective mycorrhizal association is required for every crop of P uptake in nearly all soils as various soil factors such as soil pH (Hayman and Tavares 1985), soil moisture (Roger, Bert, and Anthony 1986), salinity (Poss and Jarrell 1985), and soil amendments - such as addition of fertilizers (Hayman 1975) and pesticides (Menge 1982) - are known to affect the performance of VAM fungus. Therefore, it requires selection of an appropriate fungus (Menge 1983). The two criteria used are infectivity and efficacy (Hass and Krikun 1985; Krikun, Haas, and Bar-Yosef 1987), besides the root colonization ability of the fungus tq survive in soil.
机译：印度许多地区的甘蔗（Saccharum officinarum L）作物种植在不同的土壤上，这些土壤中的大多数，特别是黑土，磷含量低至中等（最高30千克/公顷）。由于土壤中碳酸盐（5％-10％）的存在，通过肥料施用的磷在相当大的程度上是固定的。过去几十年进行的研究已经很好地证明了VAM（水泡状丛枝菌根）真菌可以改善植物生长主要是通过增加对磷的吸收，特别是在低磷土壤中进行的（Bowen 1978）。在施用的磷迅速固定的土壤中，生长的正向响应通常较慢（Abbott，Robson和Parker 1979）。尽管已知甘蔗在其根系中自然具有VAM关联性（Chandrakant，Moore和Hapase 1989），但是在不同土壤中（Chandrakant，Zende和More，1989）以及在同一土壤下的不同品种中，甘蔗的强度存在显着变化。提出土壤条件（Chandrakant，Moore和Hapase 1989）。几乎所有土壤中的每一种磷吸收作物都需要有效的菌根结合，包括各种土壤因素，例如土壤的pH值（Hayman和Tavares 1985），土壤湿度（Roger，Bert和Anthony 1986），盐度（Poss和Jarrell 1985），已知土壤和土壤改良剂会影响VAM真菌的性能，例如添加肥料（Hayman 1975）和农药（Menge 1982）。因此，需要选择合适的真菌（Menge 1983）。除了真菌在土壤中的根定殖能力外，使用的两个标准是感染力和功效（Hass和Krikun 1985; Krikun，Haas和Bar-Yosef 1987）。

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