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首页> 外文期刊>Journal of genetics >Identification of QTLs in oil palm (Elaeis guineensis Jacq.) using SSR markers through association mapping
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Identification of QTLs in oil palm (Elaeis guineensis Jacq.) using SSR markers through association mapping

机译：通过关联映射使用SSR标记的油棕（Elaeis Guineensis Jacq）鉴定QTLS

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Oil palm (Elaeis guineensis Jacq.) is a perennial vegetable and a high oil-yielding crop (4a??6 t/ha). There is a large scope for increasing the oil yield by selecting elite planting material for breeding programme in germplasm evaluation, characterization and utilization. In the present study, a diverse range of 150 oil palm genotypes were characterized using 12 quantitative variables with 54genomic microsatellite markers. A wide variation was observed in the morphological traits among indigenous populations. Highly significantand positive correlations were observed between vegetative dry matter (VDM) and total dry matter (TDM) (0.862), and height and height increment (0.838). The first two principal component analyses explained 67.7% of total variation among morphological traits. The genotypes IC0610001-59 (Pune-2) and IC0610001-60 (Pune-2) were found highly promising based on less height increment, more TDMwith high yield. For the mapping study, general linear model (GLM) approach, quantitative-trait loci (QTL) for annual height increment, number of bunches, bunch yield and bunch index were linked to simple-sequence repeat (SSR) loci mEgCIR3649 with phenotypic variance of 15.08, 10.43, 11.74, 15.39. TDM and VDM were linked to mEgCIR0192 (27.34 and 24.19%), mEgCIR3684 (16.84 and 18.30%), SPSC00163 (18.8 and 15.39%) and mEgCIR0555 (16.47 and 18.81%), with at a significant threshold (P) level of B0.001 and by mixed linear model (MLM) approach. TDM was linked to mEgCIR0555 with phenotypic variance of 20.72%, bunch yield and bunch index were linked to mEgCIR2813 at phenotypic variance of 17.11% and 12.88%, respectively, at a significant threshold (P) level of B0.01.
机译：油棕（Elaeis Guineensis Jacq。）是常年蔬菜和高油产作物（4A？6 T / HA）。通过在种质评估，表征和利用中选择用于育种程序的精英种植材料，增加了油产量的范围。在本研究中，使用12个定量变量具有54Ganomic微卫星标记物的不同范围的150个油棕榈基因型。在土着人群的形态特征中观察到广泛的变化。营养干物质（VDM）和总干物质（TDM）（0.862）和高度和高度增量（0.838）之间观察到高度显着性阳性相关性。前两个主要成分分析解释了形态特征的总变异的67.7％。基因型IC0610001-59（Pune-2）和IC0610001-60（Pune-2）基于较少的高度增量，更高的产量较高。对于映射研究，一般线性模型（GLM）方法，用于年高度增量，束数，束产量和束指数的定量特征基因座（QTL）与简单序列重复（SSR）LOCI MEGCIR3649相关联15.08,10.43,11.74,15.39。 TDM和VDM与MEGCIR0192（27.34和24.19％），MEGCIR3684（16.84和18.30％），SPSC00163（18.8和15.39％）和MEGCIR0555（16.47和18.81％），以显着的阈值（P）水平为B0。通过混合线性模型（MLM）方法。 TDM与MEGCIR0555相关联，其表型方差为20.72％，束产率和束指数分别以17.11％和12.88％的表型方差，分别在B0.01的显着阈值（P）水平下，在表型方差为MEGCIR2813。

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