کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8879530 | 1624786 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Geographical variation in breaking the seed dormancy of Persian cumin (Carum carvi L.) ecotypes and their physiological responses to salinity and drought stresses
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Seed germination is a critical stage in the life of crops. The laboratory experiments were conducted to determine whether the severity of seed dormancy in Persian cumin ecotypes and their response to salinity and drought stresses could be influenced the parent plant habitat. Seeds of three Persian cumin ecotypes (Alamut, Khabar, and Tandoureh) were collected from three protected areas in Iran. For each ecotype in seed dormancy-breaking study, the treatments included control, the prechilling of seeds for 20, 40, and 60 days at 5â°C and 10% relative humidity and the inundating of them into 0.72, 1.44, and 2.88âmmol GA3âLâ1 for 24âh. In the response to salinity and drought stresses study, two experiments were arranged separately as a completely randomized factorial design to investigate the effect of salinity and drought stress. In the 1st experiment, the prechilled seeds of three Persian cumin ecotypes were subjected to four salinity stress levels (0, 2, 4, and 6âdSâmâ1). In the 2nd experiment, those were subjected to four drought stress levels (0, â0.2, â0.4 and â0.6âMPa). All three ecotypes of Persian cumin had a deep dormancy. The ecotype of Alamut which has been harvested from a cool climate had a deeper seed dormancy than other ecotypes which have been harvested from a relatively warm climate. In all ecotypes, the highest germination rate and the lowest mean germination time were found where their seeds were prechilled for 60 days. The highest response to prechilling was observed in Alamut ecotype. The salinity and drought stresses resulted in a reduction in the rate and a delay in the speed of seed germination in three ecotypes of Persian cumin. The highest sensitive to salinity and drought stresses was observed in Alamut ecotype which its seed was obtained from where soil pH and EC are low. Here, habitat-correlated variation in Persian cumin seed germination response and stress tolerance was demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 124, 15 November 2018, Pages 600-606
Journal: Industrial Crops and Products - Volume 124, 15 November 2018, Pages 600-606
نویسندگان
Hossein Hammami, Bijan Saadatian, Akbar Aliverdi,