ﺑﺮرﺳﯽ ژﻧﻮﺗﯿﭗ ﻫﺎي ﺳﻮﯾﺎ در ﺷﺮاﯾﻂ ﺗﻨﺶ ﮐﻢ آﺑﯽ ﺑﺎ اﺳﺘﻔﺎده از ﺷﺎﺧﺺ ﻫﺎي ﺗﺤﻤﻞ ﺑﻪ ﺗﻨﺶ

Evaluation of soybean genotypes in response to water deficient conditions using drought tolerance index

ﺑﻪ ﻣﻨﻈﻮر ﺑﺮرﺳﯽ ﻋﻤﻠﮑﺮد ارﻗﺎم ﻣﺨﺘﻠﻒ ﺳﻮﯾﺎ ﻣﺘﺎﺛﺮ از ﺗﯿﻤﺎرﻫﺎي ﻣﺨﺘﻠﻒ آﺑﯽ، آزﻣﺎﯾﺶ ﻣﺰرﻋﻪ اي در اﻗﻠﯿﻢ ﻧﯿﻤﻪ ﺧﺸﮏ اﯾﺮان در ﻣﻮﺳﺴﻪ ﺗﺤﻘﯿﻘﺎﺗﯽ اﺻﻼح و ﺗﻬﯿﻪ ﻧﻬﺎل و ﺑﺬر ﮐﺮج ﻃﯽ ﺳﺎل زراﻋﯽ 1397-1396 اﻧﺠﺎم ﺷﺪ. در اﯾﻦ آزﻣﺎﯾﺶ 36 ژﻧﻮﺗﯿﭗ ﺳﻮﯾﺎ از ﻧﻈﺮ رژﯾﻢ ﻫﺎي ﻣﺨﺘﻠﻒ آﺑﯿﺎري در دو ﺳﻄﺢ ﺷﺎﻣﻞ آﺑﯿﺎري ﮐﺎﻣﻞ و ﮐﻢ آﺑﯿﺎري )ﺑﻪ ﺗﺮﺗﯿﺐ آﺑﯿﺎري ﭘﺲ از ﻣﺼﺮف 40 و 70 درﺻﺪ رﻃﻮﺑﺖ ﻗﺎﺑﻞ اﺳﺘﻔﺎده در ﺧﺎك( ﻣﻮرد ارزﯾﺎﺑﯽ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. ﻃﺮح ﻣﻮرد اﺳﺘﻔﺎده در اﯾﻦ ﺗﺤﻘﯿﻖ ﺑﻪ ﺻﻮرت دو آزﻣﺎﯾﺶ ﺟﺪاﮔﺎﻧﻪ در ﻗﺎﻟﺐ ﻃﺮح ﻻﺗﯿﺲ6×6 ﺳﺎده ﺑﻮد. ﻧﺘﺎﯾﺞ ﺗﺠﺰﯾﻪ ﺑﻪ ﻣﻮﻟﻔﻪ ﻫﺎي ﺷﺎﺧﺺ ﻫﺎي ﺗﻨﺶ ﺧﺸﮑﯽ و ﺗﺠﺰﯾﻪ ﺑﺎي ﭘﻼت ﻧﺸﺎن داد ﮐﻪ ارﻗﺎﻣﯽ ﻣﺎﻧﻨﺪ Prohio ، Columbus ،L75-3735 ،Pyramid و Douglas از ﺟﻤﻠﻪ ژﻧﻮﺗﯿﭗ ﻫﺎﯾﯽ ﻫﺴﺘﻨﺪ ﮐﻪ از آﻧﻬﺎ ﻣﯽ ﺗﻮان ﺑﻪ ﻋﻨﻮان واﻟﺪﯾﻦ در ﺑﻠﻮك ﻫﺎي دورگ ﮔﯿﺮي ﺑﻪ ﻣﻨﻈﻮر ﺑﻬﺒﻮد ﺗﺤﻤﻞ ﺑﻪ ﺧﺸﮑﯽ ارﻗﺎم ﺟﺪﯾﺪ اﺳﺘﻔﺎده ﻧﻤﻮد.

In order to study of performance of different varieties of soybeans under different water treatments, a field experiment was carried out in semi-arid climate of Iran at the Seed and Plant Improvement Inistitute, Karaj, Iran during 2017. In this experiment, 36 soybean genotypes were evaluated for different irrigation regimes in two levels including full irrigation and low irrigation (irrigation after 40 and 70% moisture utilization in soil respectively). The design used in this study was two separate experiments in the form of a simple lattice design. The results of the princepal components analysis of drought stress index and bi-plot analysis showed that cultivars such as Pyramid, L75-3735, Columbus, Prohio and Douglas are some of the lines that can be used as parental in hybridization blocks improve drought tolerance of new cultivars.