黄麻种间杂种F_4的产量和纤维品质及抗病性测定

The tests of the traits in yield,fibre quality and disease resistance in Jute interspecific hybrid F_4

以圆果种ＲＲ－５（ＣｏｒｃｈｏｒｕｓｃａｐｓｕｌａｒｉｓＬ．）作母本，长果种（ＢＬ／７７－１９）Ｆ－１（Ｃ．ｏｌｉｔｏｒｉｕｓＬ．）作父本的种间杂种Ｆ＿４的６种类型为材料，作了产量、纤维品质和抗病性测定。结果表明，不同类型的表现不同。其中３种类型的麻皮产量、株高显著超过双亲；２种类型具有高度抗病性；以及全部类型的纤维强度都超过双亲。作者认为，通过圆果种／长果种的种间杂交能够获得高产、优质及高抗的材料，特别在纤维强度方面可能取得突破。

Six phenotypical materials were tested for yield and fibre quality and disease resis-tance in interspecific hybrid generation F_4 from a combination of the Corchorus capsularis(var. RR-5)as female parent and the C. olitorius(BL/77-19)F_1 as, male parent.The results showed that theexpression of different types are various,three of them the dry bark yield and plant height surpassthe parents significantly,two of them possess high disease resistance and all types of fibre strengthsurpass the parents in varyiap degtees. It seems that some materials of higher yield,superior qualityand high disease resistance can be obtained by jute interspecific hybridization of cOpsuleris/olito-rius,especially the fibre strength could be broken through.