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| 不同质量等级零余子对山药种薯生长和产量的影响 |
| Effects of Different Quality Grades of Bulbils on Growth and Yield of Yam Seed Tubers |
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| DOI： |
| 中文关键词: 山药 零余子 质量 种薯 产量 |
| 英文关键词:Chinese yam Bulbils Quality Seed tubers Yield |
| 基金项目:陕西省农业协同创新与推广联盟项目（LM202203）。 |
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| 中文摘要: |
| 以大和长芋山药零余子为供试材料，将零余子按鲜重分为6个等级，研究零余子质量对山药种薯植株生长和产量的影响，为山药种苗标准化繁育提供依据。结果表明：零余子质量为3.0~3.5 g处理出苗时间较早，出苗率随零余子质量增加而升高，但差异不显著；零余子质量对种薯茎粗、单株重、产量、种薯大小分布影响显著，对块茎长的影响未达到显著水平；零余子质量越大,块茎直径、单株重越高，大种薯的比例也越高，当零余子大于1.5 g时，单株重显著增加，当零余子大于2.0 g时，块茎直径、大种薯比例显著增加；在大和长芋山药种薯生产中，应选择质量大于1.5 g的零余子作为繁殖材料。 |
| 英文摘要: |
| Bulbils of Chinese yam (Dioscorea opposita) were used as experimental materials and classified into six grades based on fresh weight to investigate the effects of bulbil quality on the growth and yield of seed tubers, thereby providing a scientific basis for the standardized propagation of yam seedlings. The results showed that bulbils weighing 3.0–3.5 g emerged earlier, and emergence rates increased with increasing bulbil weight, although the differences were not statistically significant. Bulbil quality significantly affected stem diameter, plant weight, overall yield, and seed tuber size distribution, but not tuber length. Larger bulbils resulted in greater tuber diameter, increased plant weight, and a higher proportion of large seed tubers. Plant weight increased significantly when bulbil weight exceeded 1.5 g, and both tuber diameter and the proportion of large seed tubers increased significantly when it exceeded 2.0 g. Therefore, bulbils weighing more than 1.5 g are recommended for use as planting material in the production of Chinese yam seed tubers. |
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