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首页 > 过刊浏览>2020年第21卷第4期 >855-865. DOI:10.13430/j.cnki.jpgr.20191217003
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青藏高原地区不同老芒麦种质资源生产性能评价
作者:
作者单位:

青海省青藏高原优良牧草种质资源利用重点实验室/青海大学畜牧兽医科学院

基金项目:

青海省科技厅基础研究项目（2018-ZJ-968Q）；青海省科技厅重点实验室发展专项（2020-ZJ-Y03）；青海省“高端创新人才计划” 、现代农业产业技术体系建设专项资金（CARS-34）


Performance Evaluation of Different Elymus sibiricus L. Germplasm Resources in Qinghai-Tibet Plateau
Author:
Affiliation:

Key Laboratory of Utilizing Excellent Forage Germplasm Resources in Qinghai-Tibet Plateau/Academy of Animal Husbandry and Veterinary Sciences, Qinghai University

Fund Project:

Basic Research Project of Science and Technology Department of Qinghai Province (2018-ZJ-968Q)；Key Laboratory of Qinghai Provincial Department of Science and Technology for Development (2020-ZJ-Y03)；Qinghai Province “High-end Innovative Talents Plan” , Special Fund for Construction of Modern Agricultural Industry Technology System (CARS-34)

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    摘要:

    为选育适应青藏高原高产优质的老芒麦(Elymus sibiricus L.)品种，以青藏高原不同生态区域采集的11份老芒麦种质资源为对象，以国审登记品种青牧1号和同德老芒麦为对照，进行了连续3年的种子生产性能评价，为进一步选育种用型老芒麦材料提供依据。结果表明：（1）各材料在不同年份间种子产量均存在显著差异（P<0.05），其中以I-1-5-13和I-1-5-19产量表现最优，平均产量达到1494.93 kg/hm2和1386.82 kg/hm2，较青牧1号老芒麦高81.49%和68.36%，较同德老芒麦高90.92%和77.11%。（2）随种植年份的增加，老芒麦种子产量呈下降变化。从种子稳产性来看，I-1-5-47和I-1-5-50两份材料3年内均表现为高产稳产，均可作为种用型老芒麦进行重点培育。（3）从各材料种子产量与产量性状相关性分析结果来看，单序籽粒数、种子长、小穗数、穗长和单序籽粒重与种子产量显著正相关（P<0.05），其中单序籽粒数与种子产量间的正相关最大（相关系数为0.809），且其对种子产量增产的直接效应最大，可作为种用型老芒麦种子产量评价的关键性状。（4）13份材料种子产量及产量性状的聚类分析可将其可分为3类：第I类群来源于海拔较高地区，平均海拔为3967m，其产量表现中等；第Ⅱ类群材料来源于平均海拔为3244m的低海拔地区，该类群种子产量高；第Ⅲ类群材料来源海拔高，平均海拔为4392m，其种子产量低。

    Abstract:

    In order to breed for elite Elymus sibiricus L. varieties suitable for the high yield and high quality in Qinghai-Tibet Plateau, we conducted a three-year field trials for investigating the seed production performance. Eleven E. sibiricus L. germplasm resources collected in different ecological regions of the Qinghai-Tibet Plateau as well as two the nationally-registered varieties Qingmu NO.1 and Tongde were applied. The results showed that: (1) There were significant difference on seed yield production among different genotypes in different years (P<0.05). Two genotypes I-1-5-13 and I-1-5-19 showed the best yield performance, with an average of 1494.93 kg/hm2 and 1386.82 kg/hm2, 81.49% and 68.36% higher than that of Qingmu NO.1, and 90.92% and 77.11% higher than that of Tongde. (2) The seed yield generally became declined constantly in a manner of continuous cropping. Attractively, both I-1-5-47 and I-1-5-50 showed high and stable yield production within 3 years. Based on the production performance, both genotypes showed a potential in future breeding for seed-type E. sibiricus L. (3) The yield traits, i.e. the seed number per inflorescence, seed length, number of spikelet, length of spike and seed weight per inflorescence were significantly positively correlated with seed yield (P<0.05). Especially, the seed number per inflorescence showing an correlation coefficient of 0.809, in relative to seed yield, can be used as a key indicator in predicting the seed yield. (4) The cluster analysis of seed yield and yield traits suggested three categories: group-I that represented the genotypes which were originated from areas with higher altitudes with an average altitude of 3967m, and showed a moderate yield performance; group-II that represented the genotypes which were originated from low-altitude areas with an average altitude of 3244m, and showed a high seed yield; group-III that represented the genotypes which showed a low seed yield and were originated from higher altitudes areas with an average altitude of 4392m.

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吴瑞,刘文辉,张永超,等.青藏高原地区不同老芒麦种质资源生产性能评价[J].植物遗传资源学报,2020,21(4):855-865.

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  • 收稿日期:2019-12-17
  • 最后修改日期:2020-05-15
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