CMS with High Linolenic Acid Content in Brassica napus L.:Rapid Breeding Method and Effect
In order to speed up the cross breeding process of Brassica napus L.with high linolenic acid content,taking the rapeseed germplasm with high linolenic acid content as experimental materials,the CMS and its corresponding maintainer lines of Brassica napus L.with high linolenic acid content were breed by using the rapid breeding method.The results showed that the breeding period was shortened from 5 to 6 years to 4 years,the linolenic acid content was increased from 11.85％to 16.96％,the oil content was increased from 45.0％to 48.8％,and the linolenic acid output per plant was increased from 0.98 g to 1.53 g.Compared with the original CMS(SHAAN6A),the oil content,the yield per plant,the linolenic acid content,the outcrossing seed coefficient and the linolenic acid yield per plant of"YM-1 A"were increased by 8.45％,4.49％,59.43％,12.8％and 80.65％,respectively,the coefficient of self-seed setting was decreased by 56.86％.Because the sterility,agronomy,quality and other traits had been significantly improved,YM-1A had the higher utilization value in cross breeding of Brassica napus L.with high linolenic acid content.
Brassica napus L.CMS with high linolenic acid contentrapid breedingbreeding effect
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