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ydd1982

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[求助] PGPR促进作用研究论文翻译英译汉

3、The effect of the five isolates in our study was then observed in pot trials using chickpea. The effect of salinity could be relieved in plants inoculated with selected PGPR compared to plants not treated with PGPR. Primary root length enhancement was maximal in MSC4 followed by MSC1. Similarly, Vivas and others (2003) reported enhanced root and shoot growth of lettuce inoculated with Bacillus spp. under dry salt stress conditions. Munns (2003) mentioned that suppression of plant growth under saline stress may be due to the decreasing availability of water or toxicity of high salt concentrations.
4、A substantial increase in root length may be responsible for increased nutrient uptake by plants. The seeds treated with MSC4 and MSC1 showed maximum growth of roots and shoots, resulting in growth promotion and higher yields. Zahir and others (2008) reported increases in the shoot length, fresh weight, and number of leaves per pea plant. This result is in accordance with our results where we observed an increase in root length, shoot length，number of leaves, and lateral root count of chickpea when inoculated with MSC1 and MSC4 under salt stress. An
increase in chlorophyll content in all plants treated with PGPR under saline stress has also been reported by Nadeem and others (2006), whereas Lee and others (2001) reported an increase in chlorophyll a and b in lettuce plants grown in the presence of NaCl stress. Increased chlorophyll content may be the result of an increase in the photosyn- thetic area of plant leaves at high salt stress by PGPR inoculation compared to control untreated plants where leaf area was reduced due to stress. An increase in chlorophyll content may also be attributed to the increase in the pho-tosynthesis load on plants to fulfill plant nutrient require-ments under stress conditions. According to Cheeseman (1988), salinity stress diverts metabolic carbon to storage pools, so as a result less carbon is available for growth, leading to reduced growth of plants.

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wildwolf110

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爱与雨下(金币+2): 2011-11-08 21:20:54
ydd1982(金币+140, 翻译EPI+1): 辛苦了 2011-11-12 21:44:37

3 用鹰嘴豆盆栽试验观察到了我们的研究五种分离的效果，与没有用PGPR处理的植物相比，用PGPR接种植物，盐度的影响可以得到缓解。在MSC4中，主根长度增加最大，其次是在MSC1中。同样，维瓦斯和其他人报道（2003），接种芽孢杆菌能增强根和新梢生长的莴苣，在干盐压力条件下，Munns提到，在生理盐水的压力下的植物生长抑制作用可能是由于水的利用率减少或高浓度盐毒性引起的。
4 根长度的大幅增加可能归因于由植物养分吸收的增加，用MSC4和MSC1处理的种子表明，根与芽的最大增长能够促进生长和产量的提高。查希尔及其他人（2008）报道了芽长，鲜重，以及每棵豌豆的叶子数量的增加。这一结果与在盐胁迫下，用MSC1和MSC4接种时，我们观察到根长，芽长，叶片数，鹰嘴豆侧根数的增加不谋而合，纳迪姆等人也有报道了（2006），在盐胁迫下，PGPR处理所有的植物中的叶绿素含量的增加，而李等人发现在盐胁迫下，生菜植物生长中叶绿素a和b的增加，与未经处理的植物因盐胁迫叶面积减少相比，叶绿素含量的增加可能是在高盐胁迫下，PGPR接种在植物叶片的光合面积增加的结果。叶绿素含量的增加也可能是由于植物光合作用负载的增加，以满足在盐胁迫条件下植物营养的需求。据奇斯曼报道（1988年），盐胁迫将代谢碳转移到存储池，结果降低碳的增长，从而减少植物增长。

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