瓜重、瓜数与杂交一代制种量相关的研究

Relationship between Seed-producing Number of Xinnong Watermelon Hybrid F_1 and Their Productivity

本研究探讨了兴农西瓜瓜重、瓜数与杂交一代产籽量的相关性。结果表明:春季制种单瓜重与种籽粒数的相关区间在0.4—4.8kg,秋季制种其相关区间在0.4—3.8kg区间内都呈二次指数方程正相关;两季制种单瓜重在0.4—3.0kg区间内产籽量随瓜重增加而近似直线上升;单株产籽量随瓜数的增加而成自然对数方程正相关,其种籽百粒重和质量经方差分析和试验无显著差异。据此结论是:控制瓜重在3.0kg内,主要着眼点是力增结瓜数,以达到增加单位面积产籽量的目标要求。

The relationship between seed-producing number of Xinnong watermelon hybrid F1 and their weight and fruit-bearing number has been determined. The results showed that the correlative range between onemelon weight and its seed number during spring and autumn seasons is positively related from 0. 4 to 4. 8 kg and 0. 4 to 3. 8 kg respectively, belongs to the quadratic exponential equation. Within the range of 0. 4 -3. 0 kg one-melon weight, the seed-producing number increases linearly with the increase of melon weight in both two seed-producing seasons. The seed-producing number per plant is positively related to the increase of melon-bearing number. and belongs to the natural logarithm equation. But 100-seed weight and quality showed no significantly difference by the variance analysis. Thus, the measures for increasing seed-producing number in given area include two respects: (1) To increase watermelon number per plant; (2) To limit the watermelon weight below 3. 0 kg.