Faria Marcos Ventura, Maluf Wilson Roberto, de Azevedo Sebastião Márcio, Andrade-Júnior Valter Carvalho, Gomes Luiz Antonio Augusto, Moretto Paulo, Licursi Vicente
Departamento de Biologia, Universidade Federal de Lavras, Caixa Postal 37, 37200-000 Lavras, MG, Brasil.
Genet Mol Res. 2003 Sep 30;2(3):317-27.
The effects of the fruit ripening mutant gene alcobaça (alc) and color development mutants, old gold-crimson (ogc) and high pigment (hp), on yield and post-harvest quality of tomato fruits were investigated. Five tomato hybrids were obtained by crossing near isogenic lines with Flora-Dade background [Flora-Dade (alc+/alc+ ogc+/ogc+ hp+/hp+), TOM-559 (alc/alc ogc+/ogc+ hp+/hp+), TOM-591 (alc/alc ogc/ogc hp+/hp+), TOM-593 (alc/alc ogc+/ogc+ hp/hp), and TOM-589 (alc/alc ogc/ogc hp/hp)] with the pollen parent line Mospomorist (alc+/alc+ ogc+/ogc+ hp+/hp+). Hybrid fruit was harvested at the breaker stage and stored on shelves at 15oC and 60% relative humidity for 16 days, and then evaluated for firmness, development of red color, and carotenoid contents. The different genotypic combinations at the loci alc, ogc and hp had no effect on fruit yield. The alc+/alc hybrid genotype significantly increased fruit firmness and significantly delayed the development of red color in maturing fruit. Simultaneous usage of ogc+/ogc and hp+/hp promoted an increase in the red color and lycopene content of alc+/alc hybrids, but did not have any additional effect on fruit firmness.
研究了果实成熟突变基因阿尔科巴萨（alc）以及颜色发育突变体老金-深红色（ogc）和高色素（hp）对番茄果实产量和采后品质的影响。通过将具有弗洛拉-戴德背景的近等基因系[弗洛拉-戴德（alc+/alc+ ogc+/ogc+ hp+/hp+）、TOM-559（alc/alc ogc+/ogc+ hp+/hp+）、TOM-591（alc/alc ogc/ogc hp+/hp+）、TOM-593（alc/alc ogc+/ogc+ hp/hp）和TOM-589（alc/alc ogc/ogc hp/hp）]与花粉亲本系莫斯波莫里斯特（alc+/alc+ ogc+/ogc+ hp+/hp+）杂交，获得了5个番茄杂交种。杂交果实于转色期采收，在15℃和60%相对湿度条件下贮藏在货架上16天，然后对果实硬度（坚实度）、红色发育情况和类胡萝卜素含量进行评估。alc、ogc和hp位点的不同基因型组合对果实产量没有影响。alc+/alc杂交基因型显著提高了果实硬度，并显著延迟了成熟果实红色的发育。同时使用ogc+/ogc和hp+/hp促进了alc+/alc杂交种红色和番茄红素含量的增加，但对果实硬度没有任何额外影响。
