[Determination of yield components of trigonelline in fenugreek [trigonella foenum-graceum L.] seed based on path analysis and regression]

Trigonelline in fenugreek seed is a valuable medicinal metabolite in reducing blood cholesterol and blood. Determine the most important components of seed yield, percent and yield of seed trigonelline in fenugreek under foliar application and non-application of methanol. The experiment was done a randomized complete block design with two treatments as foliar application of methanol [0 and 30 v/v%] and four replications. Path analysis and stepwise regression were used in order to denote the most important effective traits on seed yield, percent and yield of seed trigonelline in fenugreek. The results showed that 1000-seeds weight and number of branches per plant for seed yield; total dry weight and number of pods per plant for percent of seed trigonelline; seed yield and percent of seed trigonelline for yield of seed trigonelline in the non-application of methanol, and also, the number of seeds per pod, percent of seed oil, number of pods per plant and plant height for seed yield; leaf dry weight, shoot trigonelline and geometric mean diameter of seed for percent of seed trigonelline and seed yield; percent of seed trigonelline and pod length for yield of seed trigonelline in foliar application of methanol [30 v/v%] treatment significantly justified changes related to the dependent variables. Path analysis of dependent variables showed that the yield of seed trigonelline by direct positive effect of seed yield and the percent of seed trigonelline were the most important yield components of seed trigonelline. Generally, the results indicate that seed yield and percent of seed trigonelline can be used for increasing of yield of seed trigonelline in the breeding of fenugreek

[Quality/quantity changes in oil and morphological traits of medicinal pumpkin [cucurbita pepo L.] under different cultivation practices]

Medical pumpkin is a medicinal plant that has a special place in the pharmaceutical industry, and evaluation of quantitative and qualitative yield is a under different agronomic treatments is necessary. Investigating of quality/quantities yield of oil and morphological traits of Cucurbita pepo. affected of planting date and row arrangement. This study was done as split plot on complete randomized blocks design with 3 replications at Research field of Aburaihan College, University of Tehran in 2010 and 2011 years. Treatments were included 3 main plots of planting dates [20 Apr, 21 May and 21 June] and 3 subplots of row arrangement [1, 1.5 and 2 meter between two rows]. In this study evaluated 1000 seeds weight, seeds number in fruit, seeds weight per fruit, seed yield, seed produce index, oil percentage and oil yield. The year had not significant effect on any traits expect of oil percentage and seeds number in fruit. The interaction of planting date and row arrangement were significant in all quality and quantity traits. Maximum of seed yield, seed oil percent and oil yield were obtained in 1 meter row spacingx21 may treatment and 1.5 meterx21 June treatment. Maximum of unsaturated fatty acids percent and minimum of saturated fatty acids percent were obtained in planting date of June with 1.5 and 2 meter row spacing. According to significant effect of row arrangement and planting date on seed and oil yield of medical pumpkin, quality and quantity growth followed economic yield of this plant could be improved by using appropriate agronomic management