evaluation of stigma receptivity period in several peach cultivars through controlled pollination under field and laboratory condition
نویسندگان
چکیده
in order to study stigma receptivity in peach cultivars : (‘makhmali’, ‘anjiri-ye-tabestane’, ‘anjiri-ye maleki’, ‘haj-kazemi’ and ’zoodras’) controlled pollination was done in both field and laboratory conditions. before pollination trials the in vitro germination of the pollen was tested in petridish. branches with adequate number of flowers were chosen for controlled pollination. self pollination was carried out by hand, on the same day as emasculation (day 0) and thereafter every two days (2, 4, 6, 8 days after emasculation). to allow for growth of pollen tubes pollinated pistils were collected four days after pollination and fixed in faa. pistils were washed several times and autoclaved in a solution of 5% sodium sulfite for softening. after staining with aniline blue, the pollen germination at the stigma and pollen tubes growth in each section of style (upper and bottom) and ovary was determined by means of fluorescence microscopy. results revealed that the stigmas of studied cultivars were receptive at balloon stage and reach their optimum receptivity between 2 and 4 days later. our studied cultivars in confrontation to occurrence of temperature oscillations in field condition had different reactions at different pollination times. regarding to pollen germination at the stigma surface and in vitro condition and existence the pollen tubes inside the ovary, became clear that studied cultivars are self-compatible and male-fertile.
منابع مشابه
evaluation of sadr eminence in safavid period
چکیده: یکی از دوره های مهم تاریخی ایران به لحاظ تأمین استقلال ملی مذهبی و حتی تأثیر آن بر فرهنگ و مذهب ایرانیان، دوره صفویه است. رسمیت دادن و رواج مذهب شیعه توسط شاه اسماعیل اول، یکی از مهمترین اقدامات این دولت محسوب می شود. بنابراین برای اجرای این سیاست، وی منصب صدارت را به عنوان منصبی مذهبی- حکو متی ایجاد کرد .این منصب از دوره ی تیموریان ایجاد شده بود ولی در اواخر این دوره اهمیت بیشتری یافت...
15 صفحه اولEvaluation growth analysis and grain yield of sunflower cultivars under sowing date in dry condition
Sunflower is one of the most important edible oil that growth of annual crops, it is grown over a widely area and is considered a crop adapted to an every environmental conditions, in order to study growth analysis of sunflower under sowing date and cultivars in dry condition a farm experiment was conducted a split plot arranged in a complete randomized block design with three replications in t...
متن کاملEvaluation growth analysis and grain yield of sunflower cultivars under sowing date in dry condition
Sunflower is one of the most important edible oil that growth of annual crops, it is grown over a widely area and is considered a crop adapted to an every environmental conditions, in order to study growth analysis of sunflower under sowing date and cultivars in dry condition a farm experiment was conducted a split plot arranged in a complete randomized block design with three replications in t...
متن کاملevaluation of commercial sugar beet cultivars for resistance to cercospora leaf spot under field condition
resistance of 16 sugar beet cultivars to cercospora leaf spot was evaluated in ghaemshahr region. the experiment was conducted in a complete block design with 6 replications, and, disease severity of cultivars was measured two times. root yield of cultivars, as well as their disease severity, was compared with each other under natural cercospora infection in dezful area (winter crop). in dezful...
متن کاملevaluation of commercial sugar beet cultivars for resistance to cercospora leaf spot under field condition
resistance of 16 sugar beet cultivars to cercospora leaf spot was evaluated in ghaemshahr region. the experiment was conducted in a complete block design with six replications and disease severity of cultivars was measured two times. as a winter crop the root yield of cultivars and their disease severity compared under natural cercospora infection in dezfoul area in a complete block design with...
متن کاملthe effect of functional/notional approach on the proficiency level of efl learners and its evaluation through functional test
in fact, this study focused on the following questions: 1. is there any difference between the effect of functional/notional approach and the structural approaches to language teaching on the proficiency test of efl learners? 2. can a rather innovative language test referred to as "functional test" ge devised so so to measure the proficiency test of efl learners, and thus be as much reliable an...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
علوم باغبانیجلد ۲۷، شماره ۳، صفحات ۲۸۶-۰
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023