فهرس المقالات Pollen viability

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  1 - Evaluation of Germination Capacity of Stored Pollen of Almond and Peach
  Ali Imani Mohammad Hadi Kargar Saead Piri Pireivatlou Farid Asgari Seiyed Hassan Masomi
  10.22034/jon.2011.515752
  Pollen viability and its germination capability for fruit set in are almond and peach essential. To optimize the pollen culture medium of almond and peach and selection of best medium, the present study was carried out with 48 different culture media containing differen أکثر

  Pollen viability and its germination capability for fruit set in are almond and peach essential. To optimize the pollen culture medium of almond and peach and selection of best medium, the present study was carried out with 48 different culture media containing different compositions including diverse levels of boric acid (0 and 100mg/1), calcium nitrate (0,150and300mg/l،), magnesium sulphate (0 and200mg/l), potassium nitrate (0 and100 mg/l), sucrose (10 and15 %) and agar (1 %). Following optimization of the best medium, in order to determine the viability of stored pollens of almond and peach cultivars, three months after maintenance at 4°C,-20°C and -80°C was assessed through evaluation of their germination percentage using optimized medium. Maximum pollen germination (99.80 %) was recorded in B2M2K1C2S medium (boric acid 100 mg/l, magnesium sulphate 100 mg/l, potassium nitrate 0.0 mg/l, calcium nitrate 0.0 mg/l, sucrose 15 % and agar 1%). Lowest germination percentage (30.57 %) was found in B1K1M2C3S1 medium (boric acid 0.0 mg/l, potassium nitrate 0.0 mg/l, magnesium sulphate 100 mg/l, calcium nitrate 150 mg/l, sucrose 10 % and agar 1 %). Data recorded for pollen germination of stored pollen showed that Rabie Pollen stored at -80°C gave highest germination (90.66 %) while the lowest germination (64.00 %) was observed in Anjiri pollen stored at +4°C. The findings of the present study may help the fruit breeders and whoever is involved in pollen analysis studies. تفاصيل المقالة
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  2 - Effects of Boron and Cold Stress on Germination of Almond Pollen in Vitro Culture
  M. Bigdeli Moheb A. Imani M. Shamili
  10.22034/jon.2016.527105
  This study was carried out in order to determine the effects of boron and cold stress on pollen germination of almond hybrids in vitro culture, two different media including the absence and presence of boron (0 mg/l, and 100 mg/l) in 10% sucrose and 1% agar medium at 24 أکثر

  This study was carried out in order to determine the effects of boron and cold stress on pollen germination of almond hybrids in vitro culture, two different media including the absence and presence of boron (0 mg/l, and 100 mg/l) in 10% sucrose and 1% agar medium at 24°C in dark conditions. The results showed that different treatments had a significant effect on the germination percentage. The highest pollen germination percentage in H24 and S8 almond hybrids was recorded as 98.35 % and 97%, 34% in vitro culture medium containing 100 ppm boric acid, 10% sucrose +1% agar, whereas these amounts were 87.56% and 89.46% in the basic medium without the presence of boric acid, respectively. In conclusion, in vitro pollen germination of almond was inhibited in the medium culture without boron and in cold stress, while it was increased in the medium with boron. Thus, boron can increase the almond yield. تفاصيل المقالة