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A new method to determine self-fertility in plum varieties


, : A new method to determine self-fertility in plum varieties. Acta Horticulturae: 155-162

The pistil is longest in semi-self-fertile varieties and somewhat shorter in self-fertile ones; fully and practically self-sterile varieties have short pistils. Self-sterile plums have most stamens. The ratio stamen number : pistil length gives some indication of degree of self fertility. Examination of 2940 flowers demonstrated a significant negative correlation between pistil length and stamen number.

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