Garcia-Lor A, Bermejo A, Morales J, Hernández M, Medina A, Cuenca J, Navarro L, Aleza Pablo
Centro de Citricultura y Producción Vegetal, Instituto Valenciano de Investigaciones Agrarias, Valencia, Spain.
Front Plant Sci. 2021 Feb 24;12:640512. doi: 10.3389/fpls.2021.640512. eCollection 2021.
Pummelos and hybrids, such as grapefruits, have high furanocoumarin and low flavonoid contents. Furanocoumarins interact negatively with certain drugs, while flavonoids are antioxidant compounds with health benefits. To obtain new grapefruit-like varieties with low furanocoumarin and high flavonoid contents, diploid and triploid hybrid populations from crosses between diploid and tetraploid "Clemenules" clementine and diploid "Pink" pummelo were recovered and analyzed. With regard to furanocoumarins, triploids produce less bergapten, bergamottin and 6,7-DHB than diploids. Regarding flavonoids, triploids yielded more eriocitrin, narirutin, hesperidin and neohesperidin than diploids, whereas no differences were observed in neoeriocitrin and naringin. These results indicate that, the strategy to recover triploid hybrids by 4x × 2x crosses is more appropriate than the recovery of diploid hybrids by 2x × 2x crosses for obtaining grapefruit-like varieties of citrus with lower furanocoumarin and higher flavonoid contents.
柚子及其杂交品种，如葡萄柚，具有较高的呋喃香豆素含量和较低的类黄酮含量。呋喃香豆素与某些药物会产生负面相互作用，而类黄酮是具有健康益处的抗氧化化合物。为了获得呋喃香豆素含量低且类黄酮含量高的类似葡萄柚的新品种，对二倍体和四倍体“克莱门氏”柑桔与二倍体“粉红”柚子杂交产生的二倍体和三倍体杂交群体进行了回收和分析。关于呋喃香豆素，三倍体产生的佛手柑内酯、香柑醇和6,7 -二羟基香豆素比二倍体少。关于类黄酮，三倍体产生的橙皮苷、柚皮苷、橙皮苷和新橙皮苷比二倍体多，而在新橙皮苷和柚皮苷方面未观察到差异。这些结果表明，通过4x×2x杂交获得三倍体杂种的策略比通过2x×2x杂交获得二倍体杂种的策略更适合用于获得呋喃香豆素含量较低且类黄酮含量较高的类似葡萄柚的柑橘品种。
