Abstract
A field experiment was conducted at research station of College of Agriculture University of Baghdad in Abu-Griab. The aim was to study early generation of cowpea under water stress regime. The purpose was to diagnose which genotypes have high yield and stability under water deficit. The experiment consisted of two levels of water deficit (50 and 75%) and three genotypes selected and original genotype. Randomized complete block design (RCBD) within split plots arrangement with three replicates in two seasons of 2014 were used. The results revealed that S5 gave highest mean in chlorophyll index and dry matter per induvial plant were 74.66 , 68.44 SPAD. in spring and autumn season respectively. In addition to , S5 had a short period to reproductive phase. S5 gave highest mean seed yield per hectare and water use efficiency were 1246.23 and 2211.84 Kg.ha-1 , 0.19 and 0.51 in spring and autuman seasons, respectively. S4 gave less days to 50% flower were 56.17 and 40.33 in spring and autumn season, respectively. PCV and GCV were so dose in peroxide (13.0 ,12.13%) and (5.70 , 4.68%) in spring and autumn seasons, respectively. Stability values were high in peroxidase , proline , water use efficiency and seed yield (87, 94.3%),( 99.87 , 99.82%), (93.22, 92.33%), (86.5,93.46%) in spring and autumn , respectively. It can be concluded the significant dependance on certain triats in diagnosing the genotypes that tolerated to drought . Therefore S5 was tolerant of drought because of superiority in relative water content. . It is important to use S5 in genotypic and environmental interactions for many years and locations to determine its stability. It can be rationled much quentity of water by following irrigation at 75% . Water deficit which reduced number of irrigation to ten in autumn season, leading to increase of water use efficienly to 0.37 .
Highlights
The results revealed that S5 gave highest mean in chlorophyll index and dry matter per induvial plant were 74.66, 68.44 SPAD. in spring and autumn season respectively
بس ثي مم كف م بةاعص ر بيصي اوم صةاصض %50بةااف مبظ صس ص بيتط اعثض يثي مم باا ل و لر بي لصت صي تار ص كصير بيص بيصةاةمز ة ثي مم كصير بيص مم بيل ر بيكاير صثي مم صة ور بياتر بيصعت ر ياات ي .يموا صلصم امبةر صعاصط يس بيا بتكي بيص بت ير صصةاصيا كصي م صي بيتط ا كم بيصصةصيس ،بل بع بياتكي بيص بت ا S5بيصثتصث اوم بيصةاصض %50بةااف مبظ صس ص بيتط بعا صاصة اغ 0.202كغز لصت(ز 1-)3صي تار الر بيصثتصث اوم صةاصض %75بةااف مبظ ص بيتط بيلط بع بما صاصة اغ 0.117كغز لصت(ز ، 1-)3بص ا بيصصةز بيةتيفا يم بع بياتكي بيص بت ا بيصااة S5افة بعا صاصة اغ 0.572كغز لصت(ز 1-)3اوم صةاصض صي بيتط %50 بةااف م صي بيتط صي تار ياتكي بيص بت ا بيصااة S3اوم صةاصض %75بةااف م صي بيتط بيلط بع بما صاصة اغ 0.296كغز لصت(ز .1-)3يعصم ة بتاف ث كف م بةاعص ر بيص بيوياا ا S5بي ثي مم و لا صس بي لصت صصس بيص مم بيل ر اوم اتصخ بيشمصم بيت ص ير بيصةاافر ي ةظ كصير بيص بيصةاةمصر صص باعكج ا ثي مم كف م بةاةمبز بيصي (2ص .)3ك ام بياغ ي بتم بيص بت ير ا بك ت صس بياغ ي بتم بي ي ير ا كم بيصصةصيس بيتيعا صبيةتيفا ،ص لب باعكج عا اة ر بياصتيب بياا اغم %98ص%61 ياصصةصيس بيتيعا صبيةتيفا عا بياا ،بص يز P.C.Vو G.C.Vيم ك ام صاي تر بل اغم %6.78ص %6.77 ياصصةز بيتيعا ياا ص %7.67ص %6.04ا بيصصةز بيةتيفا صبياا بمم بي ثي مم اة ر بجةاي بتت بيص بت ا بياا اغم %93.22ص %92.33يكم بيصصةصيس بيتيعا صبيةتيفا ياا .يصكس بعاص م %75بةااف م ص تط يةيا صولصر بياص ي عام بيث بتعر ا كم بيصصةصيس ،كصس عمم بيتي م 12صكف م بةاعص ر بيص 0.141كغز.و ص .ز3- ياصصةز بيتيعا صعمم بيتي م 10صكف م بةاعص ر بيص ا 0.367كغز.و ص .ز 3-ا بيصصةز بيةتيفا ،صص يص ت ص ظ ب يظ يصكس بةاعص ي ا ثي مم تعر بيصة ور بيصثتصعر.
Summary
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
