摘要： 采用NCⅡ（NorthCarolina）交配设计，对42个品种间杂交杂种一代组合和13个亲本品种进行比较试验，研究品种间杂交杂种一代优势及其与亲本的关系。结果表明：红麻品种间杂交杂种优势明显，大多数性状杂种优势达极显着水平，其中以杂种一代单株纤维产量优势最明显。影响杂种一代单株纤维产出能力的性状从大到小依次是单株鲜茎（含叶，下同）重，基部茎粗，基部皮厚，株高。同一性状两亲本对不同性状的影响有差异，F1单株纤维产量与小值亲本P2呈极显着正相关，而与大值亲本P1呈显着正相关，与两亲本之差呈不显着负相关，获得较理想杂种一代组合的亲本标准是：双亲的单株纤维产量及株高均比较优良；必须有一亲本茎粗和皮厚表现突出；双亲之一有较高的干皮精洗率。

关键词: 红麻, 杂种一代, 杂种杂势, 相关

Abstract: A kenaf comparative test including 42 F1 obtained from a 6×7 NCⅡ(North Carolina)diallel cross,and 13 parental varietes,was carried out in the research farm of Institute of Bast Fibre Crops,CAAS,during 1993 to 1994.The heterosis of varietal cross and its relation to parents was investigated.The results indicate that the heterosis of varietal cross F1 in kenaf is obvious,the dominance for most economic traits of F1 is highly significant,and among an traits studied,fibre weight per plant takes the first place.Fibre yield perplant is highly affected by green weight,then base diameter,basal thickness and plant height respectively.Each trait of a hybrid combination is differently affected by each parent.The Correlation coefficient of fibre yield per plant between F1 and high value parent (P1) is positive and highly significant while it is significantly positive between F1 and low value parent (P2).The basic criteria used to select the parents for making a kenaf promising hybrid combination is recommended as fellows:Both two parenfs should be high in plant height and fibre yield per plant,and one of them must have high values in basal thickness,base diamefer and fibre rate.

Key words: F1, Heterosis, Correlation

中图分类号: 

• S563