花期去叶对甘蓝型杂交油菜经济性状和品质性状的影响

本文报道了不同花期分别摘去植株全部叶片的试验结果,研究去叶后对杂交油菜经济性状和商品性状的影响.结果表明,初花期去叶对杂交油菜的株高、二次有效分枝数、单株角果数和单株产量有极显著负效应,对一次有效分枝数和每果粒数有显著负效应,对千粒重则有极显著正效应.终花期去叶对株高有极显著负效应,对千粒重有极显著正效应,对其它经济性状无显著影响.花期去叶对杂交油菜的品质性状无显著影响.以上结果可为研究杂交油菜的生理和栽培提供参考.

Effect of removing leaves on economy & quality properties of hybrid B.napus at the flowering stage

The effects of time of leaf removal on hybrid rape(B. napus L. )werestudied under field condition in Hefei, in 1989-1990. Results indicated that removingleaves at the start of flowering, Plant height, second effective branch number,effective pods and yield per plant were very sigificantly reduced, but firsteffective branch number and seed per pod significantly reduced. 1000-grain weightwas very significantly increasd, Leaf removal at end of flowering very signifi-cantly reduced plant height, very significantly increased 1000-grain weight, didn'tsignificantly affect the yield and other economic characters. Leaf removal atdifferent stages of flowering didn't affect quality characters.