اثر هيدروپرايمينگ و رژيم هاي آبياري بر عملكرد، اجزاء عملكرد و برخي خصوصيات رشد و فيزيولوژيك ژنوتيپ هاي نخود(.Cicer arietinum L ) در دو كشت بهاره و پاييزه

چكيده انگليسي :

Effect of Hydro priming and Irrigation Regimes on Yield Yield Components and Some Growth and Physiologic Attributes of Spring and Autumn Sown Chickpea Genotypes Ali Gholami Zali Ali gholami@ag iut ac ir July 21 2014 College of Department Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiJamshid Razmjoo razmjoo@cc iut ac ir Parviz Ehsanzadeh ehsanp@cc iut ac ir AbstractDrought and delayed planting are among factors that affect crop productivity Seed priming is amongstmitigative strategies for tackling the latter factors No sufficient data is available on the impact of plantingseason irrigation regime and seed priming on chickpea when grown in temperate climates of Lorestan province western Iran This study was aimed at studying the effect of planting season and irrigation regime on sixchickpea genotypes and the best seed priming treatment for seed production of Hashem chickpea genotypeunder field conditions In a preliminary laboratory experiment a 10 h priming treatment was found to beappropriate for obtaining the greatest germination percent and velocity Two field studies were conducted in2013 each comprised of two experiments one autumn sown and the other spring sown In field experiment1 primed and non primed seeds of Hashem genotype were sown in autumn and spring and subjected to fourirrigation levels irrigation after 75 100 and 150 mm evaporation from a class A evaporation Pan and noirrigation in 3 replicate split plot studies In field experiment2 six chickpea genotypes i e Arman Azad Hashem ILC 482 Greet and Nourabad were sown in autumn and spring and subjected to the fourabove mentioned irrigation levels in a 3 replicate split plot experiment Results of the experiment1 indicatedthat seed priming led to shortened development stages and thus reduced 9 6 and 47 growth degree days GDD s to 50 emergence and flowering in genotype Hashem respectively Seed priming led to 3 4 6 2 17 9 8 9 8 5 7 1 and 8 2 increases in green cover percent SPAD index number of active nodule plant height grain yield harvest index and water use efficiency for grain yield of latter genotype respectively compared to non primed seeds Results of Experiment2 indicated that GDD s for 50 seedling emergence andflowering in spring sown chickpea were greater due presumably to higher temperatures relative to those inautumn sown chickpea Though GDD s for flowering termination and physiological maturity of autumn sownchickpea were greater relative to those of spring sown chickpea due to a prolonged flowering with the autumn sown chickpea Autumn sown chickpea indicated greater green cover percent leaf area index number of activenodule fertile pod sterile pod main branch auxciliary branch plant height grain yield plant grain yield biological yield harvest index water use efficiency for grain yield and biological yield compared to the spring sown chickpea Water deprived spring sown plants produced greater leaf proline contents though they indicatedsmaller green cover percent leaf area index fertile pod seeds pod main branch auxiliary branch plant height 100 seed weight grain yield plant grain yield biological yield and harvest index compared to well wateredplants The greatest 2608 3 kg ha 1 and smallest 910 7 kg ha 1 grain yields were obtained with autumn sownchickpea at 75 mm level of irrigation and spring sown at non irrigated level of irrigation rainfed with 392 3mm annual rain fall respectively Genotype Greet out performed the rest of genotypes in terms of grainyield plant grain and biological yield due to a greater leaf area index and a prolonged grain filling period Itcould be concluded that planting genotype Greet in autumn and irrigation after 75 mm evaporation from theclass A pan may lead to greater chickpea yield in the temperate regions of Lorestan Keywords hydro priming planting season chickpea grain yield water use efficiency

غلامي زالي، علي

اثر هيدروپرايمينگ و رژيم هاي آبياري بر عملكرد، اجزاء عملكرد و برخي خصوصيات رشد و فيزيولوژيك ژنوتيپ هاي نخود(.Cicer arietinum L ) در دو كشت بهاره و پاييزه

پيش اندازي , فصل كشت , عملكرد دانه , بهره وري مصرف آب