Integrative Biology Journals

Plant Diversity ›› 1980, Vol. 2 ›› Issue (03): 1-3.

• Articles •    

SOME ADVANTAGES AND PR0BLEMS 0F APPLYING THE POLLEN-DERIVED PLANTS TO CROSS BREEDING 0F RICE (O.sativa. subsp. japonica)

Hu zhong Huang Shi-chou Li Cong   

  1. Kunmming Institute of Botany,Academia sinica;Nan-Ba Production Brigade, Qian-wei People's Commune, Kunming
  • Online:1980-06-25 Published:1980-06-25

粳稻杂交育种中应用花粉植株的某些优点和存在问题

胡忠;黄仕周;李聪   

  1. 中国科学院昆明植物研究所

Abstract: In 1976,six hundred green pollen plantlets from F1 hybrids of rice were obtained by anther culture with an average induction-frequency of 5%. Spontaneous doubling diploids among grown plants was about 50%. Between the spontaneous doubling plants (H1) grown in greenhouse and its progenes (H2) grown in field, significant relation in heading date (n=37, r= 0.714), no significant relation in grain weight (n = 37, r = 0.301), and no relation in fertility were found. This figure related partially to the more or less confusion in ploidy level of H1 pollen plants.

Key words: advantagens, problems of applying, pollen-derived , plants

摘要: 1976年用花药培养方法从粳稻F1杂种获得600余丛花粉绿苗,诱导率平均为5%.在长成的花粉植株中,自发加倍的二倍体约占50%。
在生长于温室的自发加倍二倍体花粉植株(H1)与生长于大田的后代(H2)之间,观察到抽穗日期有显著相关(n=37,r=0.714),千粒重有相关但不显著(n=37,r=0.301),结实率无相关,这种情况部分与花粉植株H1的倍数性混乱有关。
114个花粉植株H2株系中只有二个株系出现明显分离。由一个F1杂种产生的花粉植株之间,性状的变异很宽,数量性状呈连续正态分布,超亲变异很明显。相当部分株系的抗稻瘟病性失于亲本.

关键词: 粳稻杂交, 花粉植株, 优点