Abstract
The present study was carried out in a private orchard in Abu –
Alkhaseeb region –Basrah , during the growing season of 2011 , to study
some of physiological changes during growth and development of the
date palm ( phoenix dactylifera L. ) cv.(Khadrawi, Hillawi, sayer, Am
Al -dhen, Mektom). Result showed had a significant in considered,
sucrose concentration of fruit increased continuous to reach its highest
values at khala stage, then event by gradual decrease during rutab and
tamer stages. The total soluble solids of reducing sugars and total sugars
concentration and there was a gradual increase reached a peak value at
the tamer. Fruits of Sayer recorded the highest value in the percentage of
reducing , total sugars and total soluble solids 55% , 57%, 62%
respectively to tamer stage while Am Al- dhen recorded the highest value
of reducing sugars and percentage dry matter 22% , 52% respectively to
rutab stage . Values of moisture content compounds of fruits were high at
Kimri stage, then decreased as the fruits advanced toward the stages of
Khalal, Rutab and Tamer, , whereas the reverse was true for changes in
percentage dry matter, the results showed total acidity decreased during
growth and development stage. Changes in respiration rate production in
both cultivars was typical of that which characterize climacteric fruits
Alkhaseeb region –Basrah , during the growing season of 2011 , to study
some of physiological changes during growth and development of the
date palm ( phoenix dactylifera L. ) cv.(Khadrawi, Hillawi, sayer, Am
Al -dhen, Mektom). Result showed had a significant in considered,
sucrose concentration of fruit increased continuous to reach its highest
values at khala stage, then event by gradual decrease during rutab and
tamer stages. The total soluble solids of reducing sugars and total sugars
concentration and there was a gradual increase reached a peak value at
the tamer. Fruits of Sayer recorded the highest value in the percentage of
reducing , total sugars and total soluble solids 55% , 57%, 62%
respectively to tamer stage while Am Al- dhen recorded the highest value
of reducing sugars and percentage dry matter 22% , 52% respectively to
rutab stage . Values of moisture content compounds of fruits were high at
Kimri stage, then decreased as the fruits advanced toward the stages of
Khalal, Rutab and Tamer, , whereas the reverse was true for changes in
percentage dry matter, the results showed total acidity decreased during
growth and development stage. Changes in respiration rate production in
both cultivars was typical of that which characterize climacteric fruits
Abstract
أﺟرﯾـــت ﻫـــذﻩ اﻟدراﺳـــﺔ ﻓـــﻲ اﺣـــد اﻟﺑﺳـــﺎﺗﯾن اﻷﻫﻠﯾـــﺔ ﻓـــﻲ ﻣﻧطﻘـــﺔ أﺑـــﻲ اﻟﺧﺻـــﯾب ﻓـــﻲ ﻣﺣﺎﻓظـــﺔ
اﻟﺑﺻرة ، ﺧﻼل ﻣوﺳم اﻟﻧﻣو ٢٠١١ ﻟﻣﻌرﻓﺔ ﺑﻌض اﻟﺗﻐﯾرات اﻟﻔﺳﯾوﻟوﺟﯾﺔ ﺧﻼل ﻧﻣـو وﺗطـور ﺛﻣـﺎر
ﻧﺧﯾل اﻟﺗﻣر L. dactylifera Phoenix ﻷﺻﻧﺎف ) أﻟﺧﺿراوي، اﻟﺣﻼوي ، اﻟﺳﺎﯾر، أم اﻟـدﻫن
واﻟﻣﻛﺗوم .( أظﻬرت اﻟﻧﺗﺎﺋﺞ وﺟود ﻓروﻗﺎت إﺣﺻـﺎﺋﯾﺔ ﻣﻌﻧوﯾـﺔ ﻓـﻲ اﻟﺻـﻔﺎت اﻟﻣدروﺳـﺔ ، ﺣﯾـث ازداد
ﺗرﻛﯾز اﻟﺳﻛروز ﺑﺷﻛل ﻣﺳﺗﻣر ﻟﯾﺳـﺟل اﻋﻠـﻲ اﻟﻘـﯾم ﻋﻧـد ﻣرﺣﻠـﺔ اﻟﺧـﻼل ﺛـم ﺣـدث اﻧﺧﻔـﺎض ﺗـدرﯾﺟﻲ ﺧﻼل ﻣرﺣﻠﺗﻲ اﻟرطب واﻟﺗﻣر. أﻣﺎ ﺗرﻛﯾز اﻟﻣـواد اﻟﺻـﻠﺑﺔ اﻟذاﺋﺑـﺔ اﻟﻛﻠﯾـﺔ واﻟﺳـﻛرﯾﺎت اﻟﻣﺧﺗزﻟـﺔ واﻟﻛﻠﯾـﺔ
ﻓﻘد ﻛﺎﻧت اﻟزﯾﺎدة ﻓﯾﻬﺎ ﺗدرﯾﺟﯾﺔ ووﺻﻠت إﻟﻰ اﻋﻠﻲ ﻗﯾم ﻟﻬﺎ ﻋﻧد ﻣرﺣﻠﺔ اﻟﺗﻣـر ، ﻓﻘـد ﺳـﺟل اﻟﺻـﻧف
ﺳــﺎﯾر أﻋﻠــﻰ اﻟﻘــﯾم ﻓــﻲ اﻟﻧﺳــﺑﺔ اﻟﻣﺋوﯾــﺔ ﻟﻠﺳــﻛرﯾﺎت اﻟﻣﺧﺗزﻟــﺔ واﻟﻛﻠﯾــﺔ واﻟﻣــواد اﻟﺻــﻠﺑﺔ اﻟذاﺋﺑــﺔ اﻟﻛﻠﯾــﺔ %٥٥ و %٥٧ و %٦٢ ﻋﻠﻰ اﻟﺗواﻟﻲ ﻟﻣرﺣﻠﺔ اﻟﺗﻣر ﻓﻲ ﺣﯾن ﺳﺟل اﻟﺻﻧف أم اﻟدﻫن أﻋﻠـﻰ اﻟﻘـﯾم ﻟﻠﺳﻛرﯾﺎت اﻟﻣﺧﺗزﻟﺔ واﻟﻧﺳﺑﺔ اﻟﻣﺋوﯾﺔ ﻟﻠﻣﺎدة اﻟﺟﺎﻓﺔ ﻟﻣرﺣﻠـﺔ اﻟرطـب%٢٢و%٥٢ ﻋﻠـﻰ اﻟﺗـواﻟﻲ .ﺑﯾﻧﻣـﺎ ﻛﺎﻧت ﻗﯾم اﻟﻣﺣﺗوى اﻟﻣﺎﺋﻲ ﻋﺎﻟﯾﺔ ﻓﻲ ﻣرﺣﻠﺔ اﻟﻛﻣري ﺛم اﻧﺧﻔﺿت ﻫذﻩ اﻟﻘـﯾم ﻣـﻊ ﺗﻘـدم اﻟﺛﻣـﺎر ﺑﺎﺗﺟـﺎﻩ ﻣراﺣل اﻟﺧـﻼل واﻟرطـب واﻟﺗﻣـر، وﻟﻘـد ﻛـﺎن ﺳـﻠوك اﻟﻣـﺎدة اﻟﺟﺎﻓـﺔ ﻣﻌﺎﻛﺳـﺎً ﻟﺗﻐﯾـرات اﻟﻣﺣﺗـوى اﻟﻣـﺎﺋﻲ، ﻛﻣﺎ أوﺿﺣت اﻟﻧﺗﺎﺋﺞ ﺗﻧﺎﻗص اﻟﺣﻣوﺿﺔ اﻟﻛﻠﯾـﺔ ﺧـﻼل ﻣراﺣـل اﻟﻧﻣـو واﻟﺗطـور. ﻛﺎﻧـت ﺗﻐﯾـرات ﺳـرﻋﺔ اﻟﺗﻧﻔس ﻓﻲ ﻛل اﻷﺻﻧﺎف ﻫﻲ ﻣﻣﺎﺛﻠﺔ ﻟﻠﻧﻣط اﻟذي ﯾﻣﯾز اﻟﺛﻣﺎر اﻟﻛﻼﯾﻣﻛﺗﯾرﯾﺔ.
اﻟﺑﺻرة ، ﺧﻼل ﻣوﺳم اﻟﻧﻣو ٢٠١١ ﻟﻣﻌرﻓﺔ ﺑﻌض اﻟﺗﻐﯾرات اﻟﻔﺳﯾوﻟوﺟﯾﺔ ﺧﻼل ﻧﻣـو وﺗطـور ﺛﻣـﺎر
ﻧﺧﯾل اﻟﺗﻣر L. dactylifera Phoenix ﻷﺻﻧﺎف ) أﻟﺧﺿراوي، اﻟﺣﻼوي ، اﻟﺳﺎﯾر، أم اﻟـدﻫن
واﻟﻣﻛﺗوم .( أظﻬرت اﻟﻧﺗﺎﺋﺞ وﺟود ﻓروﻗﺎت إﺣﺻـﺎﺋﯾﺔ ﻣﻌﻧوﯾـﺔ ﻓـﻲ اﻟﺻـﻔﺎت اﻟﻣدروﺳـﺔ ، ﺣﯾـث ازداد
ﺗرﻛﯾز اﻟﺳﻛروز ﺑﺷﻛل ﻣﺳﺗﻣر ﻟﯾﺳـﺟل اﻋﻠـﻲ اﻟﻘـﯾم ﻋﻧـد ﻣرﺣﻠـﺔ اﻟﺧـﻼل ﺛـم ﺣـدث اﻧﺧﻔـﺎض ﺗـدرﯾﺟﻲ ﺧﻼل ﻣرﺣﻠﺗﻲ اﻟرطب واﻟﺗﻣر. أﻣﺎ ﺗرﻛﯾز اﻟﻣـواد اﻟﺻـﻠﺑﺔ اﻟذاﺋﺑـﺔ اﻟﻛﻠﯾـﺔ واﻟﺳـﻛرﯾﺎت اﻟﻣﺧﺗزﻟـﺔ واﻟﻛﻠﯾـﺔ
ﻓﻘد ﻛﺎﻧت اﻟزﯾﺎدة ﻓﯾﻬﺎ ﺗدرﯾﺟﯾﺔ ووﺻﻠت إﻟﻰ اﻋﻠﻲ ﻗﯾم ﻟﻬﺎ ﻋﻧد ﻣرﺣﻠﺔ اﻟﺗﻣـر ، ﻓﻘـد ﺳـﺟل اﻟﺻـﻧف
ﺳــﺎﯾر أﻋﻠــﻰ اﻟﻘــﯾم ﻓــﻲ اﻟﻧﺳــﺑﺔ اﻟﻣﺋوﯾــﺔ ﻟﻠﺳــﻛرﯾﺎت اﻟﻣﺧﺗزﻟــﺔ واﻟﻛﻠﯾــﺔ واﻟﻣــواد اﻟﺻــﻠﺑﺔ اﻟذاﺋﺑــﺔ اﻟﻛﻠﯾــﺔ %٥٥ و %٥٧ و %٦٢ ﻋﻠﻰ اﻟﺗواﻟﻲ ﻟﻣرﺣﻠﺔ اﻟﺗﻣر ﻓﻲ ﺣﯾن ﺳﺟل اﻟﺻﻧف أم اﻟدﻫن أﻋﻠـﻰ اﻟﻘـﯾم ﻟﻠﺳﻛرﯾﺎت اﻟﻣﺧﺗزﻟﺔ واﻟﻧﺳﺑﺔ اﻟﻣﺋوﯾﺔ ﻟﻠﻣﺎدة اﻟﺟﺎﻓﺔ ﻟﻣرﺣﻠـﺔ اﻟرطـب%٢٢و%٥٢ ﻋﻠـﻰ اﻟﺗـواﻟﻲ .ﺑﯾﻧﻣـﺎ ﻛﺎﻧت ﻗﯾم اﻟﻣﺣﺗوى اﻟﻣﺎﺋﻲ ﻋﺎﻟﯾﺔ ﻓﻲ ﻣرﺣﻠﺔ اﻟﻛﻣري ﺛم اﻧﺧﻔﺿت ﻫذﻩ اﻟﻘـﯾم ﻣـﻊ ﺗﻘـدم اﻟﺛﻣـﺎر ﺑﺎﺗﺟـﺎﻩ ﻣراﺣل اﻟﺧـﻼل واﻟرطـب واﻟﺗﻣـر، وﻟﻘـد ﻛـﺎن ﺳـﻠوك اﻟﻣـﺎدة اﻟﺟﺎﻓـﺔ ﻣﻌﺎﻛﺳـﺎً ﻟﺗﻐﯾـرات اﻟﻣﺣﺗـوى اﻟﻣـﺎﺋﻲ، ﻛﻣﺎ أوﺿﺣت اﻟﻧﺗﺎﺋﺞ ﺗﻧﺎﻗص اﻟﺣﻣوﺿﺔ اﻟﻛﻠﯾـﺔ ﺧـﻼل ﻣراﺣـل اﻟﻧﻣـو واﻟﺗطـور. ﻛﺎﻧـت ﺗﻐﯾـرات ﺳـرﻋﺔ اﻟﺗﻧﻔس ﻓﻲ ﻛل اﻷﺻﻧﺎف ﻫﻲ ﻣﻣﺎﺛﻠﺔ ﻟﻠﻧﻣط اﻟذي ﯾﻣﯾز اﻟﺛﻣﺎر اﻟﻛﻼﯾﻣﻛﺗﯾرﯾﺔ.