不同生境对野生金荞麦植物表型和营养成分的影响
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国家科技基础资源调查专项(2017FY100604–03)


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    摘要:

    以江西省野生金荞麦种质资源居群地百丈山30 km2范围内8份不同海拔高度和遮阳条件下的金荞麦(编号为JQ1、JQ2、JQ3、JQ4、JQ5、JQ6、JQ7和JQ8)为材料,观测其植物表型,测定营养成分,分析海拔高度、遮阳条件与金荞麦表型性状、营养成分的相关性,并采用遗传距离对金荞麦表型性状进行聚类分析。结果表明:金荞麦叶面积与遮阳条件呈极显著正相关,与株型呈显著正相关;株型与粗蛋白和干物质呈极显著正相关,与粗灰分呈显著正相关,与粗脂肪呈显著负相关;叶面积与粗脂肪呈极显著负相关,与粗纤维呈显著正相关;JQ1和JQ3均处于海拔高度700 m以上的半阴条件,株型松散,叶面积较大,干物质和粗蛋白含量较高,粗脂肪含量较低,牧草品质较好。

    Abstract:

    In this study, the eight samplesof Fagopyrum dibotrys(JQ, JQ2, JQ3, JQ4, JQ5, JQ6, JQ7, JQ8)were collected at different altitude and under shady conditions within 30 km2 of Baizhangshan Mountain, the habitat of wild Fagopyrum dibotrys germplasm resources in Jiangxi Province. The plant phenotypes were observed and the nutritional components were detected. The correlations between altitude or shady conditions and phenotypic traits or nutritional components were analyzed, and the cluster analysis of Fagopyrum dibotrys was carried out according to phenotypic traits. The results showed that there was an extremely significant positive correlation between leaf area and shady condition, and a significant positive correlation between leaf area and plant type. Plant type was extremely significantly positively correlated with crude protein and dry matter, significantly positively correlated with ash content, and significantly negatively correlated with ether extract. The leaf area was extremely significantly negatively correlated with crude lipid and significantly positively correlated with crude fiber. Both JQ1 and JQ3 were derived from the semi-shade condition above 700 m altitude, with loose plant type, large leaf area, high dry matter and crude protein content, low ether extract, and good forage quality.

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史吟欣,胡利珍,张志飞,胡龙兴,杨知建,钟小军.不同生境对野生金荞麦植物表型和营养成分的影响[J].湖南农业大学学报(自然科学版),2021,47(3):.

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  • 在线发布日期: 2021-06-28
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