Evaluation of picking time and vertical distribution of bolls effects on some seed germination and vigor traits and seedling field emergence of cotton (Gossypium hirsutum L.) Sahel cultivar

Document Type : Original Article

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Abstract

In order to evaluate of picking time and vertical distribution of bolls effects on some seed germination and vigor traits and seedling field emergence of cotton (Gossypium hirsutum L.) Sahel cultivar, two experiments were conducted in Golestan province during 2011-2012 in farm and a laboratory phases. In first, farm phases were carried out in factorial experiment based on a complete block design (RCBD) with four replications and two factors. Factors levels was boll picking time (first and second picking) and vertical distribution of bolls (lower, middle and upper parts). Germination and vigor tests was surveyed on these seeds and in second farm study, same seeds was planted under first year farm experiment procedure in order to evaluating of seedling filed emergence percentage, main root length of seedling and seedling vigor index under field condition. Analysis of variance of the first year of the study showed that picking time and vertical distribution of boll had only significant effect on the percent of seed germination but their interaction effect on germinated seed percentage after accelerated ageing test, seed electrical conductivity, germination percent in cool germination test, germination percent in warm germination test and cool warm vigor index were significant. Mean comparison of studied traits indicated that seed volume and seed bulk density of first picking bolls in compare to second picking bolls had effectively more values and seed germination percentage of first picking and middle-located bolls promoted the highest germination percentage. Evaluating of the seed vigor tests results under factors interaction (picking time × vertical distribution of bolls) revealed in accelerated ageing test, the seeds of lower and middle bolls had better germination percentage in compare to other treatments. Results of seedling filed emergence percentage under filed circumstance was indicated that seeds of middle bolls had highest seedling filed emergence percentage but there was no significant different between lower and upper boll seeds on seedling root length size. The highest correlation among germinated seed percentage under field condition was seen with cool germination results. Outcomes of this study were indicated in order to produce high quality seed germination and seed vigor of cotton Sahel cultivar, seed can be removed in first picking and middle bolls 

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References

Barradas, G and R. J. López-Bellido. 2007. Seed weight, seed vigor index and field emergence in six
upland cotton cultivars. J. Food Agric. Environ. 5:116-121.
Bolek, Y. and M. Olakchi. 2007.Genetic variation among cotton (Gossypium hirsutum L.) cultivars for
seed-set efficiency. Turk. J. Agric. 31: 229-235.
Edmisten, K. 2013. Cotton seed quality and planting decision. Technical Report. p. 206. North Carolina
State University, U.S.A.
Freitas, R. A., D. C. F. S. Dias, P. R. Cecon, M. S. Reis, and L. A. S. Dias. 2002. Storability of cotton
seeds predicted by vigour tests. Seed Sci. Tech. 30: 403-410.
Ghajar, A. 2007. Investigating of planting date and vertical distribution of bolls on seed vigor of cotton (cv.
Sepid). Technical Report. p. 60. Iranian Cotton Res. Ins
Groves, F. E., and F. M. Bourland. 2010. Estimating seed surface area of cottonseed. The J. Cotton Sci. 14:
74-81.
Hall, R. D. and L. E. Wiesner. 1990. Relationship between seed tests and field performance of regar
meadow bromegrass. Crop Sci. 30: 967-970.
ISTA. 2003. ISTA working sheets on Tetrazolium testing. Vol 1. Pp.165  ISTA. 2009. International rules for seed testing, Supplement to Seed Sci. Tech. 27: 1-334.
Jenkins, J. N., J. C. McCarty, Jr, and W. L. Parrott. 1990. Fruiting efficiency in cotton: Boll size and boll
set percentage. Crop Sci. 30: 857-860.
Krzyzanowski, F. C., and J. C. Delouche. 2011. Germination of cotton seed in relation to temperature.
Revista Brasileira de Sementes. 33: 543-548.
Maqsood, S., A. Basra, K. Rehman, and S. Iqbal. 2000.Cotton seed deterioration: Assessment of some
physiological and biochemical aspects. I. J. of Agri. Biol. 3: 195-198.
Mozaffari, A. 2014. Cotton production in Iran. Annual Report of Iranian Cotton Producer’s Corporation.
Available on: http://tnews.ir
OGTR. 2013. The biology of cotton. http://www.ogtr.gov.au
Pettigrew, W. T. and M. K. Dowd. 2013. Interactions between irrigation regimes and varieties result in
altered cottonseed composition. The J. Cotton Sci. 16: 42-52.
Pettigrew, W. T. and W. R. Meredith. 2009.Seed quality and planting date effects on cotton lint yield,
yield components, and fiber quality. The J. Cotton Sci. 13: 37- 47.
Rahman, H., S. A. Malik, and M. Saleem. 2005. Inheritance of seed physical traits in upland cotton under
different temperature regimes. Spanish J. Agri. Res. 3: 225-231.
Ruan, Y. L. 2013. Boosting seed development as a new strategy to increase cotton fiber yield and quality. J.
Integr. Plant Biol. 55: 572-575.
Tuck, C. A., M. P. Bange, D. K. Y. Tan, and W. N. Stiller. 2010. Assessing cultivar cold tolerance using
germination chill protocols -preliminary studies. Aust. Cotton Res. 7: 18- 23.
USDA. 2014. Cotton world supply, use, and trade. Available at www.fas. usda.gov/cotton /current/
Wiggins, M. S., B. G. Leib., T. C. Mueller, and C. L. Main. 2013. Investigation of physiological growth,
fiber quality, yield, and yield stability of upland cotton varieties in differing environments. The J. Cotton Sci.
17:140-148.
Yeates, S. J., M. F. Kahl., A. J. Dougall, and W. J. Müller. 2013. The impact of variable, cold minimum
temperatures on boll retention, boll growth, and yield recovery of cotton. The J. Cotton Sci. 17: 89-101.
Zeng, L., and E. Bechere. 2012. Combining ability for neps, seed coat fragments, and motes in upland
cotton. The J. Cotton Sci. 16: 17-26.
Iranian Journal of Seed Science and Technology
Volume 4, Issue 2 - Serial Number 8
December 2015
Pages 1-12

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