Akademik Veri Yönetim Sistemi
ZEMDIRBYSTE-AGRICULTURE, cilt.99, sa.3, ss.299-304, 2012 (SCI-Expanded)
The present study was undertaken to determine not only the characterization of the total oil and fatty acid profile of cucurbit species but also the relations between the fatty acid profile and seed germination under controlled conditions. In this study, the germination percentage in the first count, last count, germination speed, total oil and the fatty acid profile of cucurbit species were determined. There were significant differences among species for seed germination in the first count, last count and germination speed. In addition, palmitic (C16:0), oleic (C18:1n-9) and linoleic (C18:2n-6) acids were sequentially the highest in concentration followed by stearic acid (C18:0) at less than 8% and miristic (C14:0), palmitoleic (C16:1n-7), margaric (C17:0), arachidic (C20:0) and erucic (C22:1n-9) acids at an even lower content (<1%). In addition to simple correlation coefficients (r) between the total oil, fatty acid composition, and germination percentage and speed of the cucurbits; similar results were obtained in stepwise multiple regression analysis. According to stepwise multiple regression analysis C14:0, C18:2n-6, and C20:0 clearly and significantly affected germination percentages in the first and last count as well as the germination speed. Simple correlation coefficients and stepwise multiple regression analysis showed that the low or high amount of fatty acids such as miristic (C14:0), oleic (C18:1n-9), linoleic (C 18:2n-6) and arachidic (C20:0) acids in cucurbit seed might play a major role on germination percentage and speed.