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.: Home > Nature and Science > 2011 > Volume 9 Number 2 > Shuaib Kaleem1, Fayyaz- ul- Hassan2*, Imran Mahmood2, Muhammad Ahmad1, Rehmat Ullah3 and Mukhtar Ahmad2

Response Of Sunflower To Environmental Disparity

Shuaib Kaleem1, Fayyaz- ul- Hassan2*, Imran Mahmood2, Muhammad Ahmad1, Rehmat Ullah3 and Mukhtar Ahmad2
1Agriculture Adaptive Research Complex, Dera Ghazi Khan, Pakistan 2Pir Mehr Ali Shah, Arid Agriculture University Rawalpindi, Pakistan 3Soil and Water Testing Laboratory, Rajanpur, Pakistan E-mail: *Corresponding Author: durraiz70@yahoo.com
Abstract :

Sunflower crop has an evolutionary benefit of being able to maintain high level of viability in a variety of environments. Field experiments, one each in spring and autumn were executed at Pir Mehr Ali Shah, Arid Agriculture University Rawalpindi, Pakistan for two years (2007& 08) to document the effect of growing degree days on performance of sunflower hybrids. Four Sunflower hybrids, Alisson-RM, Parasio-24, MG-2 and S-278 were planted in Randomized Complete Block Design with four replications during spring and autumn. The data on yield and yield attributes of sunflower like number of achenes per head, hundred achenes weight, biological and achene yield along with achene oil content was recorded. All parameters were influenced by prevailing temperature. Amongst hybrids, MG-2 produced the maximum values for all parameters during both the seasons (spring & autumn). Overall, spring planted crop exhibited significantly higher values for achenes per head, biological yield, achene yield and oil content in comparison with autumn planting, which may be attributed to accumulation of more growing degree days during the season

Keywords :
Varying environments, Growing degree days, Yield and yield components, Spring, Autumn, Sunflower

Date Deposited : 01 Apr 2016 14:41

Last Modified : 01 Apr 2016 14:41

Official URL: http://www.sciencepub.net/nature/

Volume 9, Number 2, - 2011 , ISSN 1545-0740

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