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:: Volume 21, Issue 2 (Summer 2019 2019) ::
علوم زراعی 2019, 21(2): 109-126 Back to browse issues page
Effect of sowing time and plant density on growth and seed yield of two guar ecotypes (Cyamopsis tetragonoloba L.)
Maryam Mehdipour Afra, Majid AghaAlikhani , Saied Soufizadeh, Ali Mokhtassi-Bidgoli
Associate Prof., Tarbiat Modares University, Tehran, Iran
Abstract:   (801 Views)
To evaluate the growth duration and seed yield of two different Guar ecotypes in response to planting time
and plant density, a field experiment was conducted in 2016 growing season at the research field of Tarbiat Modares University, Iran. Experimantal factors were arranged as split plot-factorial in a randomized complete block design with three replications. The experimental factors included four planting dates (21 May, 4 June, 21 June and 5 July) assigned to main plots, and factorial combination of three plant densities (130, 200 and 400 thousand plants.ha-1) and two Guar ecotypes (Pakistani and Indian) as sub-plots. The results showed that maximum seed yield (3004.8 kg.ha-1) was obtained from 21 May sowing date and plant density of 130 thousand plants ha-1, while in 4 June sowing date, the highest seed yield was harvested from plant density of 200 thousand plants.ha-1 (1834.4 kg.ha-1). There was significant difference for grain yiled between ecotypes in 21 May and 5 June sowing dates. Pakistani ecotype produced highest highest seed yield (2706.1 kg.ha-1) in 21 May sowing date. In the second sowing date (4 June), the Pakistani ecotype produced 32.1% grain yield more than the Indian ecotype. Pakistani ecotype was superior for seed endosperm percentage (40.5%) as compared to the Indian ecotype (38.8%). In conclusion, sowing of Pakistani ecotype on 21 May with plant density of 130 thousand plants.ha-1 had higher seed yield, longer growing duration, taller plant height, higher 1000-seed weight, higher pod number per square meter, dry matter and harvest index. Therefore, it could be suitable for climatic conditions similar to Karaj in Iran.
Keywords: Cluster bean, Guar gum, Plant spacing, Seed endosperm and 1000 seed weight.
Full-Text [PDF 932 kb]   (303 Downloads)    
Type of Study: Scientific & Research | Subject: Special
Received: 2019/09/16 | Accepted: 2019/09/16 | Published: 2019/09/16
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Mehdipour Afra M, AghaAlikhani M, Soufizadeh S, Mokhtassi-Bidgoli A. Effect of sowing time and plant density on growth and seed yield of two guar ecotypes (Cyamopsis tetragonoloba L.). علوم زراعی. 2019; 21 (2) :109-126
URL: http://agrobreedjournal.ir/article-1-1033-en.html

Volume 21, Issue 2 (Summer 2019 2019) Back to browse issues page
مجله علوم زراعی ایران Iranian Journal of Crop Sciences
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