Method of quickly stabilizing spinach strong female line parent and improving hybrid seed purity
A technology of hybrid purity and spinach, applied in the biological field, can solve the problems of accelerating the breeding process and speeding up the pace of spinach hybrid breeding.
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Embodiment 1
[0024] 1. Breeding of strong female lines:
[0025] In Yantai area in winter (about November 10-December 10), sow strong female line seeds in the parent breeding greenhouse, and raise seedlings. In the greenhouse or greenhouse, if the cumulative high temperature treatment above 30°C is given for more than 60 hours at the end of flowering stage, a small amount of pollen will appear. After selfing, the seeds are harvested to obtain the seeds of the female parent line.
[0026] 2. Hybrid seed production technology:
[0027] (1) Sowing seedlings:
[0028] Sow the seedlings of the female parental line and the male parental line received by the spring propagation according to the local custom sowing method. The male parent is required to sow 10 days earlier than the female parent, and the seedling management method adopts the local conventional method.
[0029] (2) Cultivation mode:
[0030] According to the local customary cultivation mode, the planting method can be flat bed, ...
Embodiment 2
[0035] 1. Breeding of strong female lines:
[0036] In winter in Shanghai area (about December 5-January 5 of the following year), sow strong female line seeds in the parent breeding greenhouse and raise seedlings. The seedling stage is managed as normal, and spring (about February 15-March 10) is planted In the greenhouse or greenhouse, at the end of the flowering stage, a high temperature above 30°C is given for more than 60 hours of cumulative treatment, and a small amount of pollen will appear. After selfing, the seeds are harvested to obtain the seeds of the female parent line.
[0037] 2. Hybrid seed production technology:
[0038] (1) Sowing seedlings:
[0039] Sow the seedlings of the female parental line and the male parental line received by the spring propagation according to the local custom sowing method. The male parent is required to sow 7 days earlier than the female parent, and the seedling management method adopts the local conventional method.
[0040] (2...
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