Seed breeding method for increasing content of slowly digestible starch in rice with soft glue viscosity
A technology of slowly digesting starch and soft gel consistency, applied in botany equipment and methods, applications, plant gene improvement, etc., can solve the problems of unfavorable blood sugar for diabetics, fast digestion rate after meals, high blood sugar, etc.
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Embodiment 1
[0017] Example 1: Breeding process of improved conventional indica rice Zaoxian 14 with high SDS content
[0018] figure 1 Is the use of RM190 mark-assisted selection Wx g3 Schematic diagram of the gene increasing the SDS content of Early Indica 14, the specific steps are as follows:
[0019] Early rice variety Zaoxian 14 with soft gel consistency and high amylose content was selected as the female parent to cross with rice line W04-10-02-07-10-03 with soft gel consistency and high amylose content to obtain F 1 Seeds; polymorphism detection of RM190 marker of 2 rice parents, Early Indica 14 and W04-10-02-07-10-03 (CT) n The number of repeats is 17 and 10 respectively, with a difference of 7 repeats, and the polymorphism is good; sowing F 1 and Zaoxian 14, using Zaoxian 14 as the recurrent parent, the hybrid F 1 Backcrossing with Early Indica 14, the backcross generation BC was obtained 1 f 1 seed; sow BC 1 f 1 and Early Indica 14, from BC 1 f 1 From generation to gen...
Embodiment 2
[0020] Example 2: Breeding process of improved conventional japonica rice W328 with high SDS content
[0021] figure 2 Is the use of RM190 mark-assisted selection Wx g3 Schematic diagram of the gene to increase the SDS content of W328, the specific steps are as follows:
[0022] The japonica rice variety W328 with soft gelatin consistency and high amylose content popularized in production was selected as the female parent to cross with the rice line W04-10-02-07-10-03 with soft gelatin consistency and high amylose content to obtain F 1 Seeds; polymorphism detection of RM190 markers of 2 rice parents, W328 and W04-10-02-07-10-03 (CT) n The repeat numbers are 17 and 10 respectively, and polymorphism exists; seeding F 1 and W328, with W328 as the recurrent parent, the hybrid F 1 Backcross with W328, get backcross generation BC 1 f 1 seed; sow BC 1 f 1 and W328, from BC 1 f 1 From generation to generation, select 10 individual plants, use RM190 markers to detect substit...
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