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1 无籽西瓜培育程序利用通常的二倍性西瓜品种,在杂交当日的早晨摘取雄花,放入软X线发生装置,照射一定量的软X线,其后立即对开花中的雌花授粉。 2 软X线照射线量对种子形成的影响据调查,用“富士光TR”的正常花粉(无照射花粉)授粉时,每1果的正常种子约470粒,秕子约50粒。用软X线照射时,正常种子在200GY区约40粒,在400GY区几乎没有,在600GY区仅为秕子。这
1 Seedless watermelon breeding program Using the usual diploid watermelon cultivars, male flowers were picked on the morning of hybridization, placed in a soft X-ray generator, irradiated with a certain amount of soft X rays, and immediately pollinated female flowers in flowering. 2 Soft X-ray irradiation on seed formation According to the survey, the use of “Fuji TR ” normal pollen (non-irradiated pollen) pollination, the normal seed per fruit is about 470, about 50 seeds. When irradiated with soft X rays, the normal seeds are about 40 in the 200GY zone, hardly in the 400GY zone and only prickly heat in the 600GY zone. This