[生物] 台大普生(A)96年

[lejdu67 (三景)]

下列何種情況下,來自S1S2植物的花粉可對S2S3的花成功的完成授粉?
(A)If you used pollen from a carpelate flower,to fertilize a staminate
flower,it would be successful.
(B)If the plants used sporophytic self-incompatibility,half of the pollen
would be successful.
(C)If the plants used gametophytic self-incompatibility,half of the pollen
would be successful.
(D)Pollen from an S1S2 plant can never pollinate an S2S3 flower.

請幫忙解答一下,謝謝!!!感激不盡!!!

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推 pcboy0831:(C)
推 pcboy0831:In gametophytic self-incompatibility
→ pcboy0831:it depends on the haploid S locus of
→ pcboy0831:the pollen and the diploid S locus of
→ pcboy0831:the stigma ; In sporophytic
→ pcboy0831:self-incompatibility, both S alleles
→ pcboy0831:of the pollen parent are important
→ pcboy0831:So, in (C) , if pollen S1 ==> S2,S3
→ pcboy0831:stigma, it will grow ; but if pollen
→ pcboy0831:S2 ==> S2,S3 stigma, it will not.
→ pcboy0831:because both S2 alleles match