Breeding method of group hybridization of sweet potatoes
A hybrid seed and group technology, applied in the field of hybrid seedling breeding, can solve the problems of difficult combination configuration, affecting breeding efficiency, complex genetic basis, etc., and achieve the effect of shortening breeding time and improving breeding efficiency.
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Embodiment 1
[0038] Among the high starch germplasms, Jishu 98, Jishu 65, Yiwohong, Shengli 100, Xushu 18, Shangshu 19, Yushu 13, Wanshu 5, Wanshu 6, Eshu 6, Yushu 17 and Huang Jinqianguan were used as parents. Five potato seedlings were planted for each parent, a total of 60 potato seedlings, and the above potato seedlings were randomly cross-planted to obtain a hybrid group. Cover the hybrid group with a 45-mesh insect net. Every day from 18:00 pm to 8:00 the next day, the potato seedlings were covered with a sunshade net with a shading rate of 100% to induce flowering, and 150 bees were placed in the hybrid group to assist in pollination. When the hybrid group matures, the seeds in the group are mixed to obtain hybrid seeds. Accelerating the obtained hybrid seeds to obtain seedlings, multiplying the seedlings to more than 4 strains, performing quality identification on the obtained multiplied seedlings, and screening super-parent strains with higher target traits than the parents. Se...
Embodiment 2
[0043] Among the high starch germplasms, Jishu 98, Jishu 65, Yiwohong, Shengli 100, Xushu 18, Shangshu 19, Yushu 13, Wanshu 5, Wanshu 6, Eshu 6, Yushu 17 and Huang Jinqianguan were used as parents. Eight potato seedlings were planted for each parent, and the above potato seedlings were randomly cross-planted to obtain a hybrid group. Cover the hybrid group with a 35-mesh insect net. From 17:00 pm to 9:00 the next day, the potato seedlings were covered with a sunshade net with a shading rate of 100% to induce flowering, and 100 bees were placed in the hybrid group to assist in pollination. When the hybrid group matures, the seeds in the group are mixed to obtain hybrid seeds. Accelerating the obtained hybrid seeds to obtain seedlings, multiplying the seedlings to more than 4 strains, performing quality identification on the obtained multiplied seedlings, and screening super-parent strains with higher target traits than the parents. Select 10 super-parent lines, continue to c...
Embodiment 3
[0049] Mingmen Jinshi, Gaoxi 14, Xinxiang, Zheshu 13, Jinganshu 3, Yizi 138, Beijing 553, Xinong 431, Jishu 4 and egg yolk were selected as parents in fresh germplasm. Seven potato seedlings were planted for each parent, and the above potato seedlings were randomly cross-planted to obtain a hybrid group. Cover the hybrid group with a 40-mesh insect net. Every day from 17:00 pm to 9:00 the next day, the potato seedlings were covered with a sunshade net with a shading rate of 100% to induce flowering, and 125 bees were placed in the hybrid group to assist in pollination. When the hybrid group matures, the seeds in the group are mixed to obtain hybrid seeds. Accelerating the obtained hybrid seeds to obtain seedlings, multiplying the seedlings to more than 4 strains, performing quality identification on the obtained multiplied seedlings, and screening super-parent strains with higher target traits than the parents. Select 10 to 15 super-parent lines, continue to carry out random...
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