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Effect of seed size on seedling vigour in sunflower helianthus annuus l

Effect of seed size on seedling vigour in sunflower helianthus annuus l

Seed Research (New Delhi) 19(1): 37-40

The bulk seeds of three sunflower (Helianthus annuus L.) cultivars, viz. Modern EC-683414 and APSH-11 were graded into five size fractions. The effect of grading on seed index, germination, field-emergence index, seedling vigour and dry-matter production by the seedlings were evaluated. Seeds retained on 4.75 mm and above showed higher seedling vigour compared to seeds retained on 4.50 mm and ungraded one.

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