Effect of scape regulation on seed yield and quality in onion (Allium cepa)

YALAMALLE V R; B S TOMAR

doi:10.56093/ijas.v89i1.86130

Authors

YALAMALLE V R
B S TOMAR

https://doi.org/10.56093/ijas.v89i1.86130

Keywords:

Allium cepa, Florets, Onion, Scape regulation, Seed quality, Seed yield

Abstract

Flowering plants often produce less seed than the number of flowers they produced. A field experiment was conducted to study the effect of the scape regulation on seed yield and quality in onion (Allium cepa L.) cv. Pusa Ridhi during rabi 2015-16 and 2016-17, at Unit of Vegetable Research and Demonstration Unit (UVRDC), ICARIndian Agricultural Research Institute, New Delhi. Onion plants producing six scapes/plant were selected and the
scape numbers were regulated from 1-6/plant. The results from the present experiment reveal that, scape regulation significantly influences the seed quality. The scape length, umbel diameter was significantly higher by 13.36% and 25.65% respectively, in plants up to three scapes/plant, in comparison to plants with six scapes/plant. Highest number of florets/flower was found in plants with one scape/plant, which was 50.47% higher than the plants with six scape/plant. Plants with single scape produced 88.78% more seed yield/umbel in comparison to plants with six scapes/plant. Seed quality parameters like 1000-seed weight, speed of germination, seedling vigour were higher in plants up to
four scapes/plant. Though there was reduction in the overall yield but the reduced yield is likely to be compensated by high seed vigour which may lead to higher filed emergence. It is suggested that during seed production of onion maximum of four scapes may be retained to obtain seeds with high quality.

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Author Biographies

YALAMALLE V R

Ph D Scholar, Division of Seed Science and Technology,
B S TOMAR

Head, Division of Vegetable Science.

References

Ambreen N, Sharma S K and Shukla Y R. 2009. Effect of fruit load on seed yield and quality of okra. Annals of Biology 25 (2): 147-9.

Ami E J, Islam M T and Farooque A M. 2013. Effect of vernalization on seed production of onion. Agriculture, Forestry and Fisheries 2: 212-7. DOI: https://doi.org/10.11648/j.aff.20130206.12

Anonymous. 2018. http://www.iasri.res.in/sscnars/

Bontha V, Tomar B S and Singh B. 2014. Effect of truss retention and pruning of berry on seed yield and quality of cherry tomato (Solanum lycopersicum varcerasiforme) grown under different polyhouse structures. Indian Journal of Agricultural Sciences 84: 1335-41.

Burd M. 1998. “Excess’’ flower production and selective fruit abortion: a model of potential benefits. Ecology 79 (6): 2123–32. DOI: https://doi.org/10.1890/0012-9658(1998)079[2123:EFPASF]2.0.CO;2

FAO. 2016. http://www.fao.org/faostat/en/?#data/QC

ISTA. 2014. Seed testing rules. The International Seed Testing Association, Barsserssorf, CH-Switzerland.

Johnson S D and Nilsson L A. 1999. Pollen carry over, geitonogamy, and the evolution of deceptive pollination systems in orchids. Ecology 80: 2 607–19. DOI: https://doi.org/10.1890/0012-9658(1999)080[2607:PCGATE]2.0.CO;2

Khokhar K M. 2009. Effect of set-size and storage temperature on bolting, bulbing and seed yield in two onion cultivars. Scientia Horticulturae 122 (2): 187-94. DOI: https://doi.org/10.1016/j.scienta.2009.05.008

Kumar Sanjay, Tomar B S, Jain S K, Singh Naveen, Parsad Rajender and Munshi A D. 2015. Effect of planting time and density on plant growth, seed yield and quality attributes in onion (Allium cepa) cv. Pusa Riddhi. Indian Journal of Agricultural Sciences 85: 1578-85.

Kumar P R, Lal S K and Yadav S K. 2007. Standardizing retention of fruits on plant for maximum seed yield and quality in sweet pepper (Capsicum annuum L.). Haryana Journal of Horticultural Sciences 36 (1/2): 156-7.

Kumar Sanjay, Tomar B S, Saharawat Y S and Ajay Arora. 2018. Foliar spray of mineral nutrients enhanced the growth, seed yield, and quality in onion (Allium cepa L.) cv. Pusa Riddhi. Journal of Plant Nutrition 41 (9): 1155-62. DOI: https://doi.org/10.1080/01904167.2018.1434200

Kumar V, Tomar B S, Dadlani, M, Singh, B and Kumar S. 2015. Effect of fruit retention and seed position on the seed yield and quality in pumpkin (Cucurbita moschata) cv Pusa Hybrid 1. Indian Journal of Agricultural Sciences 85: 1210-3.

Manjunatha K C, Yogeesha H S, Gowda R and Prasanna K P R. 2007. Influence of fruit load on seed yield and quality in bell pepper (Capsicum annuum L.). Seed Research 35 (2): 238–9.

Marcelis L F M, Heuvelink E, Baan Hofman-Eijer L R, Den Bakker J and Xue L B. 2004. Flower and fruit abortion in sweet pepper in relation to source and sink strength. Journal of Experimental Botany 55 (406): 2261–8. DOI: https://doi.org/10.1093/jxb/erh245

Stephenson A G. 1981. Flower and fruit abortion: proximate causes and ultimate functions. Annual Review of Ecology and Systematics 12: 253–80. DOI: https://doi.org/10.1146/annurev.es.12.110181.001345

Tomar B S. 2011. Quality seed production technology of onion crops in India. http://www.krishisewa.com/cms/%20articles/seed-production/203-onion-sp.html.

Vishwanath R Y, Tomar B S and Singh B. 2008. Studies on methods of pollination for hybrid seed production of pumpkin (Cucurbita moschata Poir.). Seed Research 36 (2): 214-7.

Yalamlle V R. 2016. Effect of bulb size and number of growing axis on seed yield and quality in onion (Allium cepa L.). International Journal of Bio-resource and Stress Management 7 (6): 1409-12. DOI: https://doi.org/10.23910/IJBSM/2016.7.6.1728a