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研究了18月生不明父本橡胶苗的生长差异,以茎粗为生长参数.早抽芽(播种后12—22天内)的砧木苗,各个生长阶级的茎粗都比24—34天内迟抽芽的大.第一阶级测量的茎粗和随后各阶段有关,早抽芽的生长量比迟抽芽的大,抽芽期和生长量成显著负相关.不同阶段的生长量(大、小、中等),与降雨型式有关.早抽芽以保持优势的这种能力是可以遗传的.研究结果表明:30—35%的苗木在抽芽后可立即去劣.
The growth difference of the rubber seedlings of unknown father in 18 months was studied, and the stem diameter was used as the growth parameter.The rootstock seedlings of early buds (within 12-22 days after sowing) The stems measured in the first class were related to the following stages, and the growth of early buds was significantly and negatively correlated with the bud size, budding stage and growth rate at different stages of growth (large, small, medium) Rainfall patterns are relevant, and the ability to pick up early buds to maintain their advantage is heritable, and the results show that 30-35% of nursery stock goes bad immediately after sprouting.