Mahmoud Ghasemnejad; Roghayeh Ghorban Ali pour; Javad Fattahi Mohgaddam
Volume 13, Issue 1 , August 2011, , Pages 55-64
Abstract
Harvesting time of kiwifruit can influence quality characteristics. The current research was carried out according to a completely randomized design with three replications at Faculty of Agricultural Sciences, University of Guilan in 2009. Weight loss, flesh firmness, total soluble solid (TSS), titritable ...
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Harvesting time of kiwifruit can influence quality characteristics. The current research was carried out according to a completely randomized design with three replications at Faculty of Agricultural Sciences, University of Guilan in 2009. Weight loss, flesh firmness, total soluble solid (TSS), titritable acidity (TA), ascorbic acid, total phenol content and antioxidant capacity of harvested fruit at different times was measured after four months storage at 0.5?C. The results showed that fruit weight loss was significantly increased at the end of storage time when fruits harvested with higher ?brix (more than 6.5). Furthermore, flesh firmness of these fruits was significantly reduced during storage. Delay in harvest was resulted to increase of TSS and TSS/TA. Data showed that total phenols and ascorbic acid increased significantly with delay in harvesting time up to 8.5 and nine °brix, respectively after four months storage at 0.5?C and thereafter declined, however antioxidant capacity was higher when fruits harvested with 6.5 and nine ?brix as compared with other harvesting times. Overall, although delay in harvest might increase antioxidant compounds in kiwifruit but reduced storage quality of fruits.
Seyyad Mohammad Reza Hashemi; Jafar Asghari; Masood Esfahani; Mohammad Rabiei
Volume 11, Issue 2 , November 2009, , Pages 75-82
Abstract
The effect of harvesting time on seed germination and seedling growth of six rapeseed (Brassica napus L.) cultivars were evaluated in field and laboratory in 2004-05. The experiment was conducted in a complete randomized block design based on split plot layout with four replications. The seeds of rapeseed ...
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The effect of harvesting time on seed germination and seedling growth of six rapeseed (Brassica napus L.) cultivars were evaluated in field and laboratory in 2004-05. The experiment was conducted in a complete randomized block design based on split plot layout with four replications. The seeds of rapeseed cultivars were harvested based on grain moisture content of the siliques of one third of the bottom main stem; 1) 40% and higher, 2) 30- 40% and 3) 20-30%. Standard germination test was conducted in a complete randomized block design based on split plot layout with three replications. Germinated seeds were counted daily for 7 days and germination indices were measured. Total germination, vigor index, germination index, germination rate, energy of germination and mean germination time were significantly different in harvesting times. All seed germination and seedling growth indices were higher in the third harvest and Hyola401 performed better germination indices.