تاثیر رژیم آبیاری بر برخی ویژگی های نهال های گونه تادار (Celtis Caucasica Willd.) در مبداهای جغرافیایی متفاوت

ﺳﺎﺑﻘﻪ و ﻫﺪف: ﯾﮑﯽ از زﻣﯿﻨﻪﻫﺎﯾﯽ ﮐﻪ ﻧﻘﺶ ﻋﻤﺪهای را در اﻧﺘﺨﺎب ﻋﻨﺎﺻﺮ (ﺑﺬر) ﻣﻨﺎﺳﺐ ﺑﺮای ﭘﺮوژهﻫﺎی ﺟﻨﮕﻞ ﮐﺎری اﯾﻔﺎ ﻣﯽ ﮐﻨﺪ آزﻣﻮن اﺛﺮ ﻣﺒﺪا ﺑﺬر اﺳﺖ. ﺗﻮﻟﯿﺪ ﻣﻨﺎﺳﺐ ﻧﻬﺎل از ﻧﻘﻄﻪ ﻧﻈﺮ ارزشﻫﺎی ﮐﻤﯽ و ﮐﯿﻔﯽ در ﯾﮏ ﻧﻘﻄﻪ ﺧﺎص اﻏﻠﺐ ﺑﺴﺘﮕﯽ ﺑﻪ وﺿﻌﯿﺖ ﻣﻨﺎﺳﺐ اداﻓﯿﮑﯽ و ﺑﻪ ﺧﺼﻮص اﻗﻠﯿﻤﯽ ﻣﺒﺪا ﺑﺬر و ﻣﺤﻞ ﮐﺎﺷﺖ آن دارد؛ ﺑﻨﺎﺑﺮاﯾﻦ، ﻫﺪف از اﯾﻦ ﭘﮋوﻫﺶ، ﺗﺄﺛﯿﺮ رژﯾﻢ آﺑﯿﺎری ﺑﺮ رﺷﺪ ﻧﻬﺎل ﻫﺎی ﺗﻮﻟﯿﺪی ﺗﺎدار (.celtis caucasica willd) ﺑﺎ ﻣﺒﺪا ﺟﻐﺮاﻓﯿﺎﯾﯽ ﮐﺮج، ﻫﻤﺪان، ﺧﺮم آﺑﺎد و ﺷﯿﺮاز اﺳﺖ. ﻣﻮاد و روش ﻫﺎ: ﺑﻪ ﻣﻨﻈﻮر ﺗﻌﯿﯿﻦ ﻣﻨﺎﺳﺐﺗﺮﯾﻦ ﺗﯿﻤﺎر آﺑﯿﺎری ﺑﺮای ﭘﺮورش ﻧﻬﺎلﻫﺎی ﺗﺎدار و ﺑﺮرﺳﯽ ﻣﺒﺪ اﻫﺎی ﻣﺨﺘﻠﻒ آن، ﺑﺬور اﯾﻦ ﮔﻮﻧﻪ از ﻣﻨﺎﻃﻖ ﺟﻨﮕﻠﯽ و ﮐﻮﻫﺴﺘﺎﻧﯽ اﺳﺘﺎن ﻫﺎی اﻟﺒﺮز، ﻓﺎرس، ﻫﻤﺪان و ﻟﺮﺳﺘﺎن ﺟﻤﻊآوری ﺷﺪ. ﺑﻌﺪ از ﺟﻤﻊآوری ﺑﺬور ﺟﻬﺖ ﻣﻄﺎﻟﻌﻪ اﺛﺮ ﺗﯿﻤﺎرﻫﺎی آﺑﯿﺎری و ﻣﺒﺪا ﺑﺬر، اﻗﺪام ﺑﻪ ﮐﺎﺷﺖ ﺑﺬور در ﮔﻠﺪان ﻫﺎی ﭘﻠﯽ اﺗﯿﻠﻦ ﺷﺪ. ﻗﺒﻞ از ﺟﻮاﻧﻪزﻧﯽ ﺑﺬور، ﻫﻤﻪ ﮔﻠﺪان ﻫﺎ دارای ﺷﺮاﯾﻂ ﯾﮑﺴﺎن ﺑﻮدﻧﺪ. ﭘﺲ از آن، ﺑﻪ ﻣﺪت ﺷﺶ ﻣﺎه از اواﯾﻞ ﺧﺮداد ﺗﺎ اواﺧﺮ آﺑﺎن ﻣﺎه ﺗﺤﺖ ﭼﻬﺎر ﺗﯿﻤﺎر آﺑﯿﺎری ﺷﺎﻫﺪ، ﺳﻪ، ﭘﻨﺞ و ﻫﺸﺖ روزه در ﺳﻪ ﺗﮑﺮار 30 ﺗﺎﯾﯽ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. در اﻧﺘﻬﺎی ﻓﺼﻞ روﯾﺶ، ارﺗﻔﺎع ﻧﻬﺎل، ﻗﻄﺮ ﯾﻘﻪ، ﺳﻄﺢ ﺑﺮگ، ﻃﻮل رﯾﺸﻪ، ﻃﻮل ﺳﺎﻗﻪ و درﺻﺪ زﻧﺪه ﻣﺎﻧﯽ ﻧﻬﺎلﻫﺎ اﻧﺪازهﮔﯿﺮی ﺷﺪ. ﯾﺎﻓﺘﻪ ﻫﺎ: ﻧﺘﺎﯾﺞ آزﻣﻮن ﺗﻮﮐﯽ ﻧﺸﺎن داد اﺛﺮ ﻣﺒﺪا ﺑﺬر ﺑﺮ ﺑﯿﺶ ﺗﺮ ﺻﻔﺎت اﻧﺪازهﮔﯿﺮی ﺷﺪه ﻣﻌﻨﯽدار ﻣﯽ ﺑﺎﺷﺪ (0/05

The effect of irrigation regime on some of the vegetative characteristics of seedlings produced by Caucasian hackberry in various provenance

Background and objectives: The purpose of this research was to examine the effect of irrigation regime on the Celtis caucasica seedlings growth in the Karaj, Hamedan, Khorramabad, and Shiraz provenance. Material and methods: After collecting seeds were planted to study the effect of irrigation treatments and seed provenance, seeds in the pot. All the pots had the same conditions before all the seeds, were germinated. Subsequently, were treated to four irrigation treatments including control, 3days, 5days and 8 days in three replicates of 30 seedlings for six months from early June to late November. The seedlings height, the collar diameter, the leaf area, the root length, the stem length, and seedling survival percentage at the end of the growing season, were measured. Results: Tukey test results showed that the effect of seed provenance on all measured traits was significant (p <0.05). Irrigation treatments significantly affected seedling height, collar diameter and leaf area (p <0.05). On average, the highest amount of parameters measured at the Karaj provenance while the lowest was in Hamadan provenance. Commonly, the survival seedlings in all irrigation regimes were 70% but the highest survival rate related to control treatment. The highest seedling growth was observed in control treatment, while the least in 5days and 8days treatment, was observed. It is recommended to use Karaj Seeds for afforestation in Karaj. Conclusion: It is suggested to apply an 8days irrigation period for reducing the seedlings production cost in the nursery.Background and objectives: The purpose of this research was to examine the effect of irrigation regime on the Celtis caucasica seedlings growth in the Karaj, Hamedan, Khorramabad, and Shiraz provenance. Material and methods: After collecting seeds were planted to study the effect of irrigation treatments and seed provenance, seeds in the pot. All the pots had the same conditions before all the seeds, were germinated. Subsequently, were treated to four irrigation treatments including control, 3days, 5days and 8 days in three replicates of 30 seedlings for six months from early June to late November. The seedlings height, the collar diameter, the leaf area, the root length, the stem length, and seedling survival percentage at the end of the growing season, were measured. Results: Tukey test results showed that the effect of seed provenance on all measured traits was significant (p <0.05). Irrigation treatments significantly affected seedling height, collar diameter and leaf area (p <0.05). On average, the highest amount of parameters measured at the Karaj provenance while the lowest was in Hamadan provenance. Commonly, the survival seedlings in all irrigation regimes were 70% but the highest survival rate related to control treatment. The highest seedling growth was observed in control treatment, while the least in 5days and 8days treatment, was observed. It is recommended to use Karaj Seeds for afforestation in Karaj. Conclusion: It is suggested to apply an 8days irrigation period for reducing the seedlings production cost in the nursery.