Studies on Selection of Distant Hybridization between Cottonrose Hibiscus and Kenaf 86-369

Kenaf (Hibiscus cannabinus)722(♀,2N=36=32+4SAt,Whole lamina.Yellow flower petals) and Cottonrose Hibiscus(Hibiscus raidatus)(♂,2N=72=70+2SAt.Crack lamina.Purple-red flower petals)were used to inter species cross.F1,was 2N=54=51+3SAt.Crack Lamina.Purple-red (lower petals.Hybrid progeny was selected and bred to cottonrose hibiscus kenaf 86-369 (F14 )(2N=36=30-6SAt).It was compared with Qingpi No.3 through 28 placetimes in all over the coutry during 1987-1992.The average of dry bark weight was 5353.5 kg/hm2 increased by 17.02% with qingpi No.3 at the 1%significant level.Also it was compared with kenaf 722 through 22 place-times,the average of dry bark weight was 4918.5 kg/hm2, increased by 16.9% at the 1% significant level either.Flower petals of Cottonrose hibiscus kenaf 86-369 were pale blue, palmatipartite leaves.Economic Characters are better than those of Qingpi No.3.fiber quality is good.disease resistance is better than that of Qingpi No.3.Production demonstration in Anhuei province showed good result,it was welcome by farmers of bast fiber production.