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首页> 外文期刊>Advances in Plant Sciences >Early Yield and Growth Performance of Wild Hevea Germplasm in India
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Early Yield and Growth Performance of Wild Hevea Germplasm in India

机译：印度野生橡胶树种质的早期产量和生长性能

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摘要

Natural rubber with its center of origin in the Amazon rain forests of Brazil is a strategic industrial crop cultivated mainly in the South East Asian Countries. In the present study, a set of 545 wild Hevea accessions from three provenances of Brazilviz., Acre (AC), Rondonia (RO) and Mato Grosso (MT), along with four popularly cultivated clones, were evaluated for their early yield growth performance in the first three years of growth in a nursery in the traditional rubber growing region of Keralastate, India. The characters studied include yield and growth characters such as girth, girth increment, plant height, crotch height and single leaf area. Highly significant clonal variability was observed for yield and all the growth characters viz, girth, girth increment, plant height and crotch height execpt single leaf area. The yield ranged from 0.3 g/t/t. (RO 2153) to 4.8 g/t/t. (AC 4394); girth ranged from 8 cm (AC 3559) to 19.4 cm (MT 200); girth increment from 1.1 cm (MT 2229, RO 5430) to 7.4 cm (RO 2846); single leaf area from 33.7 cm2 (RO 2790) to 232.5 cm~2 (AC 3755); plant height from 2.4 m (AC 3559) to 7.5 m (7/118) and crotch height ranged from 1.7 m (AC 3559) to 5.5 m (AC 4114). The accessions were ranked using all the above parameters,execpt single leaf area, for overall performance, Rank sum values ranged from 38 to 2660 with a general mean of 1339. Correlations worked out among the six quantitative traits revealed that yield is significantly correlated with all the growth characters except single leaf area. Based on this study, the top 10% of the potential accessions showing early growth vigour and yield were identified which could be of use in future crop improvement programmes.
机译：天然橡胶的起源中心是巴西的亚马逊雨林，是主要在东南亚国家种植的战略工业作物。在本研究中，评估了来自巴西，英亩（AC），朗多尼亚（RO）和马托格罗索（MT）三种产地的545种野生三叶橡胶种质，以及四个流行栽培的克隆的早期产量增长表现在印度喀拉拉邦传统橡胶种植区育苗场的头三年中生长。研究的特征包括产量和生长特征，例如周长，周长增加，株高，c高和单叶面积。观察到产量具有高度显着的克隆变异性，并且所有生长特性，即周长，周长增加，植物高度和c部高度均表现出单叶面积。产量为0.3g / t / t。 （RO 2153）至4.8克/吨/吨。 （AC 4394）;围长从8厘米（AC 3559）到19.4厘米（MT 200）不等;周长从1.1厘米（MT 2229，RO 5430）增至7.4厘米（RO 2846）;单叶面积从33.7 cm2（RO 2790）到232.5 cm〜2（AC 3755）;植株高度从2.4 m（AC 3559）到7.5 m（7/118），c部高度从1.7 m（AC 3559）到5.5 m（AC 4114）。使用以上所有参数对种质进行排序，即表现出单叶面积，总体表现为，等级总和值介于38至2660之间，总体平均值为1339。在六个定量性状之间的相关性表明，产量与所有产量显着相关。除单叶面积外的生长特征。根据这项研究，确定了显示早期生长活力和单产的潜在登录量的前10％，可在未来的作物改良计划中使用。

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