This paper,presents pollen viability,stigma receptivity,pollen-ovule ratio, out-crossing index, and fruit set under a serious pollination treatments of E.

The floral characteristics,pollen-ovule ratio,and out-crossing index of seven species in polygonum were investigated.

Quick identification of tobacco pollen plants chromosomes ploidy in seeding stage;

From 1989 to 1990, rice pollen plants of the hybrids in three crosses of Yiyou 4 10×Aitai 66, SH52×Yiyou 4 10 and Yiyou 4 10×SH52 and their parents, F 1 as well as F 2 were planted at the farm of SAAS, Six agronomic traits, i.

High concentration of MET(12mg/1 )made it possible for pollen plants ofwinter wheat being alive at room temperature during summer,The numbers of plants survived at room temperature were similar to these treated with 3rug/1 METand kept in low temperature house (3～8℃), After summer, 96% of plants was still alive.

Study on the Technique of Strengthening Seedling and Doubling Chromosome of Pollen Plant of Spring Wheat;

On the basis of rice haploid breeding work in many years,the related techniques are improved to simplify culture protocol on the principle of cost-saving,to establish new haploid breeding system on the principle of high speed,and to broaden green plantlet population and re-use pollen plants on the principle of enriching genetic background.

In the pollen plant,it is easy to double chromosome of strong seedling,but it is difficult to double chromosome of weak seedling.

The induction of body cell embryo and anther embryoid of Asparagus officinalis L.