ﺷﻨﺎﺳﺎﯾﯽ ژﻧﻮﺗﯿﭗ ﻫﺎي ﻣﻘﺎوم ﺑﻪ ﺧﺸﮑﯽ در ﻧﺨﻮد زراﻋﯽ

Determination of drought tolerant genotypes in Chickpea

اﯾﻦ آزﻣﺎﯾﺶ در ﺳﺎل زراﻋﯽ 1393-94 در ﻗﺎﻟﺐ ﻃﺮح ﻻﺗﯿﺲ ﺳﺎده ﺑﺮ روي 64 ژﻧﻮﺗﯿﭗ ﻧﺨﻮد زراﻋﯽ در دو ﺗﮑﺮار در اﯾﺴﺘﮕﺎه ﻣﻌﺎوﻧﺖ ﻣﺆﺳﺴﻪ ﺗﺤﻘﯿﻘﺎت ﮐﺸﺎورزي دﯾﻢ ﺳﺮارود ﮐﺮﻣﺎﻧﺸﺎه اﻧﺠﺎم ﺷﺪ. ژﻧﻮﺗﯿﭗ ﻫﺎ ازﮐﻠﮑﺴﯿﻮن ﺑﺨﺶ ﺣﺒﻮﺑﺎت ﻣﻌﺎوﻧﺖ ﻣﻮﺳﺴﻪ ﺗﺤﻘﯿﻘﺎت ﮐﺸﺎورزي دﯾﻢ ﺳﺮارود ﮐﺮﻣﺎﻧﺸﺎه ﺗﻬﯿﻪ ﺷ.ﺪ ﺷﺎﺧﺺ ﻫﺎي ﺣﺴﺎﺳﯿﺖ ﺑﻪ ﺗﻨﺶ، ﺗﺤﻤﻞ، ﻣﯿﺎﻧﮕﯿﻦ ﻫﺎرﻣﻮﻧﯿﮏ، ﻣﯿﺎﻧﮕﯿﻦ ﻫﻨﺪﺳﯽ ﺗﻮﻟﯿﺪ، ﻣﺘﻮﺳﻂ ﺗﻮﻟﯿﺪ، ﺗﺤﻤﻞ ﺗﻨﺶ، ﻋﻤﻠﮑﺮد، ﺗﺤﻤﻞ ﺗﻨﺶ ﺗﻐﯿﯿﺮ ﯾﺎﻓﺘﻪ ﺑﺮ اﺳﺎس ﻋﻤﻠﮑﺮد داﻧﻪ در ﻫﺮ دو ﺷﺮاﯾﻂ ﻣﺤﺎﺳﺒﻪ ﮔﺮدﯾﺪ. روش اﻣﺘﯿﺎزدﻫﯽ ﺗﺤﻤﻞ ﺗﻨﺶ )STS( ﺑﺮ اﺳﺎس ﺷﺎﺧﺺ ﻫﺎي ﻣﺒﺘﻨﯽ ﺑﺮ ﻋﻤﻠﮑﺮد داﻧﻪ ﻧﯿﺰ ﻣﺤﺎﺳﺒﻪ ﺷﺪ. ﺑﺮرﺳﯽ ﻫﻤﺒﺴﺘﮕﯽ ﺑﯿﻦ ﺷﺎﺧﺺ ﻫﺎ ﻧﺸﺎن داد ﮐﻪ ﺷﺎﺧﺺ ﻫﺎي ﻣﯿﺎﻧﮕﯿﻦ ﻫﺎرﻣﻮﻧﯿﮏ، ﻣﯿﺎﻧﮕﯿﻦ ﻫﻨﺪﺳﯽ ﺗﻮﻟﯿﺪ، ﻣﺘﻮﺳﻂ ﺗﻮﻟﯿﺪ، ﺗﺤﻤﻞ ﺗﻨﺶ، ﻋﻤﻠﮑﺮد، ﺗﺤﻤﻞ ﺗﻨﺶ ﺗﻐﯿﯿﺮ ﯾﺎﻓﺘﻪ ﺑﺎ ﻋﻤﻠﮑﺮد در ﻫﺮ دو ﺷﺮاﯾﻂ ﻫﻤﺒﺴﺘﮕﯽ ﻣﺜﺒﺖ و ﻣﻌﻨﯽ داري داﺷﺘﻪ اﺳﺖ. ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ روش اﻣﺘﯿﺎز دﻫﯽ ﺗﺤﻤﻞ ﺗﻨﺶ، ﻻﯾﻦ ﻫﺎي 61 ،63 ،40، 60، 58 و 42 ﻣﻘﺎوم ﺗﺮﯾﻦ ﻻﯾﻦ ﻫﺎي ﻣﺘﺤﻤﻞ ﺑﻪ ﺗﻨﺶ ﺧﺸﮑﯽ در ﻧﻈﺮ ﮔﺮﻓﺘﻪ ﺷﺪﻧﺪ. ﺗﺠﺰﯾﻪ ﺑﻪ ﻣﺆﻟﻔﻪ ﻫﺎي اﺻﻠﯽ ﻧﯿﺰ 98/784 درﺻﺪ از ﮐﻞ وارﯾﺎﻧﺲ را ﺗﻮﺟﯿﻪ ﻧﻤﻮد.

The experiment was carried out in 8×8 Simple Lattice Design on 64 chickpea genotypes in two replications at research field of Deputy of Dryland Agriculture Research Institute, Sararood, Kermanshah, Iran. Indices of stress susceptibility, tolerance, harmonic mean, geometric mean of production, mean yield, stress tolerance, yield, and modified stress tolerance were calculated based on grain yield in both conditions. Stress tolerance scoring (STS) method was also calculated based on grain yield indices. Correlation analysis between indices showed that there were positive and significant correlations between indices of harmonic mean, geometric mean of production, mean of production, stress tolerance, yield, modified stress tolerance and yield in both conditions. According to the stress tolerance scoring method, lines 40, 63, 61, 60, 58 and 42 were considered as the most resistant to drought stress. Principal component analysis justified 98.778% of the total variance.