ﺗﺠﺰﯾﻪ ﺑﺎي ﭘﻼت اﺛﺮات ﻣﺘﻘﺎﺑﻞ ژﻧﻮﺗﯿﭗ در ﻣﺤﯿﻂ ﺑﺮ روي راﻧﺪﻣﺎن اﺳﺘﺤﺼﺎل ﺷﮑﺮ ﻫﯿﺒﺮﯾﺪﻫﺎي ﭼﻐﻨﺪرﻗﻨﺪ

Biplot analysis of genotype × environment interaction on extraction coefficient of sugar in sugar beet hybrids

در اﯾﻦ ﺗﺤﻘﯿﻖ، ﻫﯿﺒﺮﯾﺪﻫﺎي ﺑﺪﺳﺖ آﻣﺪه از ﺗﻼﻗﯽ ﯾﮏ واﻟﺪ ﻣﺎدري ﺑﺎ ﻓﺎﻣﯿﻞ ﻫﺎي ﺗﻤﺎم ﺧﻮاﻫﺮي ﻣﺨﺘﻠﻒ ﺟﻬﺖ ﺑﺮآورد راﻧﺪﻣﺎن اﺳﺘﺤﺼﺎل ﺷﮑﺮ در ﻣﻨﺎﻃﻖ ﻣﺨﺘﻠﻒ ﻣﻮرد ارزﯾﺎﺑﯽ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. ﺑﺪﻟﯿﻞ آﻧﮑﻪ واﻟﺪ ﻣﺎدري ﺗﻤﺎﻣﯽ ﻫﯿﺒﺮﯾﺪﻫﺎ ﯾﮏ ﺳﯿﻨﮕﻞ ﮐﺮاس ﻣﯽ ﺑﺎﺷﺪ، 50 درﺻﺪ از ژرم ﭘﻼﺳﻢ آﻧﻬﺎ ﻣﺸﺘﺮك ﺑﻮد. ﻫﯿﺒﺮﯾﺪﻫﺎي ﺗﻮﻟﯿﺪ ﺷﺪه ﺑﻪ ﻫﻤﺮاه دو ﺷﺎﻫﺪ، در ﻣﺠﻤﻮع 15 ژﻧﻮﺗﯿﭗ، در ﭘﻨﺞ ﻣﻨﻄﻘﻪ در ﻗﺎﻟﺐ آزﻣﺎﯾﺶ ﺑﻠﻮك ﻫﺎي ﮐﺎﻣﻞ ﺗﺼﺎدﻓﯽ ﺑﺎ ﺷﺶ ﺗﮑﺮار ﻣﻮرد ارزﯾﺎﺑﯽ ﻣﺤﺼﻮﻟﯽ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. ﮐﺸﺖ آزﻣﺎﯾﺸﺎت در ﻓﺼﻞ ﺑﻬﺎر اﻧﺠﺎم و ﺑﺮداﺷﺖ در ﻓﺼﻞ ﭘﺎﺋﯿﺰ ﺻﻮرت ﭘﺬﯾﺮﻓﺖ و ﻧﻤﻮﻧﻪ ﻫﺎي ﺧﻤﯿﺮ ﺗﻬﯿﻪ ﺷﺪه از رﯾﺸﻪ ﻫﺎ ﺟﻬﺖ ﺑﺮآورد ﺻﻔﺎت ﮐﯿﻔﯽ ﻣﻨﺠﻤﻠﻪ راﻧﺪﻣﺎن اﺳﺘﺤﺼﺎل ﺷﮑﺮ ﺑﻪ آزﻣﺎﯾﺸﮕﺎه ﺗﮑﻨﻮﻟﻮژي ﻗﻨﺪ واﻗﻊ در ﻣﻮﺳﺴﻪ ﺗﺤﻘﯿﻘﺎت اﺻﻼح و ﺗﻬﯿﻪ ﺑﺬر ﭼﻐﻨﺪرﻗﻨﺪ ارﺳﺎل ﺷﺪﻧﺪ. ﻧﺘﺎﯾﺞ ﺗﺠﺰﯾﻪ وارﯾﺎﻧﺲ ﻣﺮﮐﺐ ﺣﺎﮐﯽ از وﺟﻮد اﺧﺘﻼف ﻣﻌﻨﯽ دار ﺑﯿﻦ ژﻧﻮﺗﯿﭗ ﻫﺎ از ﻧﻈﺮ راﻧﺪﻣﺎن اﺳﺘﺤﺼﺎل ﺷﮑﺮ ﺑﻮد. در ﻣﯿﺎن ژﻧﻮﺗﯿﭗ ﻫﺎي ﻣﻮرد ﺑﺮرﺳﯽ، ژﻧﻮﺗﯿﭗ G6 و ﺑﻪ دﻧﺒﺎل آن ژﻧﻮﺗﯿﭗ ﻫﺎي G9 ،G5و G7 ﺑﺎﻻﺗﺮﯾﻦ درﺻﺪ راﻧﺪﻣﺎن اﺳﺘﺤﺼﺎل ﺷﮑﺮ و ﭘﺎﯾﺪاري را ﺑﻪ ﺧﻮد اﺧﺘﺼﺎص دادﻧﺪ. ﻫﻤﭽﻨﯿﻦ اﺛﺮ ﻣﺘﻘﺎﺑﻞ ژﻧﻮﺗﯿﭗ در ﻣﺤﯿﻂ ﻧﯿﺰ ﻣﻌﻨﯽ دار ﺷﺪ ﮐﻪ ﺣﺎﮐﯽ از ﺗﺎﺛﯿﺮ ﻣﺤﯿﻂ ﻫﺎي ﻣﺨﺘﻠﻒ ﺑﺮ روي ﺻﻔﺖ ﻣﺬﮐﻮر ﺑﻮد.

In this study, hybrids developed from a cross of a maternal plant with different full-sib families were evaluated for extraction coefficient of sugar under different regions in Iran. Because the maternal parent of all hybrids is a single-cross, 50% of their germplasm was common. Developed hybrids with two controls, a total of 15 genotypes, were evaluated in randomized complete block design with six replications in five regions. Seeds were planted in the spring and roots were harvested in autumn and pulp samples taken from roots were sent to Sugar Technology Laboratory located at SBSI for determination of quality traits including extraction coefficient of sugar. Results of combined analysis of variance showed that there was a significant difference between genotypes in terms of extraction coefficient of sugar. Among genotypes, genotype G6 followed by genotypes G5, G9 and G7 had the highest percentage of extraction coefficient of sugar and stability. Genotype × environment interaction was also significant indicating the effect of different environments on extraction coefficient of sugar. The above-mentioned genotypes can be used in future breeding programs to stabilize the extraction coefficient of sugar trait.