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Abstract Hangjiao Huangshuai is a processing type yellow pepper F, hybrid cultivar bred with the inbred line 032-1-2-1-1-H-H bred through space treatment as the female parent and 082-1-1-H-H free of space treatment as the male parent. The fruit is in the shape of long finger with few wrinkles and good gloss, and tastes very spicy .The fruit has a vertical diameter of 17.5 cm, a transverse diameter of 1.6 cm, a fresh thickness of 0.20 cm and a single fruit weight of 15.6 g. It is yellowishgreen in the early maturation stage and yellow in the late maturation stage. The cultivar exhibited high resistance to pepper blight, viral diseases and powdery mildew, and showed an average yield of 56 493.0 kg/hnf. it could be generalized in Gansu, Ningxia, Liaoning and Zhejiang.
Key words Hangjiao Huangshuai; Space mutation breeding; Processing type pepper; Breeding
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Space mutation breeding is a new plant breeding technique, during which plants or seeds are mutated in the space environment where a returnable spacecraft could reach, under the effects of such factors as cosmic radiation, microgravity, high vacuum and terrestrial magnetism and then breeding of new germplasms, new materials and new cultivars is carried out on ground. It has been developed as a new space mutation breeding ways[1]. Especially from 1987, Shenzhou spaceships and returnable satellites have carried thousands of kinds of crop seeds, biological strains and clonal materials into space, resulting in many beneficial traits, 72 crop cultivars have been selected, including rice, wheat, cotton, pepper, tomato and cucumber with good comprehensive traits, and obvious economic benefit has been achieved [2]. This study further illustrated that the space mutation breeding as a means accelerates the breeding periods of new pepper cultivars and improves the breeding probability and accuracy with the processing type Ft hybrid Hangjiao Huangshuai bred by the space mutation technique combined with conventional breeding as a successful example13'41.
Breeding Process
Space treatment of female parent
A local cultivar in Beijing, Huanglajiao was purified in 2002, 87.2 g of seeds of the plants with the characteristics of this cultivar was selected, and 5.0 g was carried on "Shenzhou-4 spaceship" into the outer space and returned to the ground on January 5, 2003.
Breeding...