Department of Horticulture, Michigan State University, East Lansing, Michigan 48823.
Plant Physiol. 1973 Jul;52(1):38-42. doi: 10.1104/pp.52.1.38.
Little or no change in ethylene or CO(2) production occurred in rin tomato mutant fruits monitored for up to 120 days after harvest. Of the abnormally ripening tomatoes investigated, including "Never ripe" (Nr Y a h, Nr c l(2) r), "Evergreen" (gf r) and "Green Flesh" (gf), only rin did not show a typical climacteric and ethylene rise.Fruits from F(1) plants resulting from reciprocal crosses between rin and normal plants apeared to ripen normally, but when compared to normal fruit, their ripening was delayed as measured by ethylene and CO(2) production and color change. These fruits produced only one-third to one-half as much ethylene at the peak of production compared to normal fruits.Exogenous ethylene or propylene treatment did not stimulate ethylene production by rin fruits but did stimulate CO(2) production. The CO(2) stimulation persisted only in the presence of the exogenous olefins. Stimulation of CO(2) production could be repeated several times in the same fruit. Wounding stress stimulated both ethylene and CO(2) production in rin fruits. It was concluded that rin tomato fruits behave like nonclimacteric fruits.
在收获后长达 120 天的时间里，rin 突变体番茄果实中的乙烯或 CO(2)产量几乎没有变化。在所研究的异常成熟番茄中，包括“Never ripe”（Nr Y a h，Nr c l(2) r）、“Evergreen”（gf r）和“Green Flesh”（gf），只有 rin 没有表现出典型的呼吸跃变和乙烯上升。来自 rin 和正常植物之间正反交的 F(1)植物的果实似乎正常成熟，但与正常果实相比，通过乙烯和 CO(2)产量和颜色变化测量，它们的成熟延迟了。这些果实的峰值产量仅为正常果实的三分之一到一半，产生的乙烯量也较少。外源乙烯或丙烯处理不能刺激 rin 果实产生乙烯，但能刺激 CO(2)产生。只有在外源烯烃存在的情况下，CO(2)的刺激才会持续。在同一果实中可以重复多次 CO(2)刺激。伤口胁迫刺激 rin 果实中的乙烯和 CO(2)产生。结论是 rin 番茄果实的行为类似于非呼吸跃变果实。
