| 1. | Crossability of distant hybridization between o . sativa and o . glaberrima 普通栽培稻与非洲栽培稻杂交的可交配性研究 |
| 2. | Effects of distant hybridization between autotetraploid rice o . sativa and o . glaberrima 同源四倍体水稻与非洲栽培稻杂交的效果 |
| 3. | Effects in the posterities of distant hybridization between autotetraploid rice o . sativa and african rice o . glaberrima 同源四倍体水稻与非洲栽培稻杂交的后效性研究 |
| 4. | Preliminary report on transfer the character of drought tolerance from wild rice oryza meridionalis and oryza australiensis to cultivate rice oryza sativa via distant hybridization and embryo rescue 通过胚胎拯救将野生稻耐旱特性转移到栽培稻进行远缘杂交初探 |
| 5. | Ovary , ovule , embryo culture and somatic hybridization could be used to overcome the incompatibility of distant hybridization and hybrid sterility , increase the genetic resources 子房、胚珠和胚培养以及体细胞杂交可用于克服远缘杂交的不亲和性和杂种的不育性,有利于拓宽种质资源。 |
| 6. | However , only did a few pollen germinate in inter - specific hybridization between cerasus fruticosa and c . avian and many pollen tubes are crosswise on stigma and couldn " t penetrated into style . although a few pollen tubes entered , they couldn " t continue to grow due to accumulation of callosity in pollen tubes . in view of above - mentioned results , the irregular growth of pollen was the main reason to cause the incompatibility of distant hybridization between cerasus fruticosa and c . avium 而草原樱桃与欧洲甜樱桃种间杂交授粉后花粉在柱头上虽少量萌发,但花粉管在柱头上横向生长,或盘绕,扭曲不能伸入花柱;个别进入花柱的花粉管先端因沉积胼胝质而中途停止伸长未能进入子房到达胚珠,从而说明这种杂交授粉后花粉管的不正常行为是导致草原樱桃与欧洲甜樱桃远缘杂交不亲和的主要原因。 |
| 7. | In this paper , observation was conducted on pollen germination and growth behavior in distant hybridization between cerasus fruticosa and c . avium and hybridization between varieties in c . fruticosa through fluorescent light system of microscope . the results showed that pollens could normally germinate and pollen tubes could reach ovary through style to completed fertilization in intraspecific hybridization in c . fruticosa . the average fruit - set rate was 27 % 通过对草原樱桃与欧洲甜樱桃种间远缘杂交及草原樱桃品种间杂交后花粉管行为的荧光观察发现,草原樱桃品种间杂交授粉后花粉在柱头上能正常萌发生长,花粉管沿花柱到达胚珠完成受精过程,平均座果率为27 。 |