Study on the regeneration system of soybean embryonic tips;

Regenerated embryonic tips were inoculated with Agrobacterium tumefaciens strain EHA105, which contains binary vector pCAMBIA2301, and cultured for 20 h.

Mature soybean seeds were soaked for 24 h, the embryonic tips were collected and cultured on MSB5 medium supplemented with 3.

To gain insight into the nature of allelochemicals and root disease incidence, the aqueous exudates collected by XAD-4 resin was identified by GC-MS technique, whereafter the effect of root exudates on cucumber radicle as well as phenolic compounds on F.

Using the exsomatize Canarium album mature embryo to raise the asepsis olive embryo seedling under the aseptic condition,takes the mature embryo and injury organization with radicle as materials,induces the Canarium album callus,and screens MS with KT 0.

Effects of the treatment of embryonic roots on the growth and nutrient uptake of chestnut seedling;

After one third,two thirdsor all of the embryonic roots of the seedling were cut,the germinating-stage-seedlingswere treated with 400×10￣(-6),800×10￣(-6),1200×10￣(-6) NAA.

Preparation of the observation slides of chromosome of Chimonanthus praecox root tip;

Cytological observation of cell mitochysis in root tip of d 1 generation after exogenous DNA introduced into fluecured tobacco;

A primary study on the fine structure of theadventitious root tip of Ipomoea batatas(L. ) Lam.;