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Enhanced Sweet Corn Propagation: Studies on Transplanting Feasibility and Seed Priming

Khalid El-Hamed1 / Mohammed Elwan1 / Walied Shaban1

Department of Horticulture, Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt1

Department of Agriculture Botany, Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt2

This content is open access.

Citation Information: Vegetable Crops Research Bulletin. Volume 75, Issue , Pages 31–50, ISSN (Online) 1898-7761, ISSN (Print) 1506-9427, DOI: 10.2478/v10032-011-0016-4, February 2012

Publication History

Published Online:
2012-02-15

Enhanced Sweet Corn Propagation: Studies on Transplanting Feasibility and Seed Priming

Sweet corn hybrids with high-sugar genotypes (sh2) has inherent problem of low seed emergence and stand in the field. This study was conducted to determine the effect of seed size, tray cell size and growing media components on sweet corn transplant transplanting. Other objectives were to evaluate the effect of priming sweet corn seeds on germination in the field. Bio-priming with Trichoderma and Bacillus, osmopriming with KNO3, and hydro-priming with H2O have been tested. The results indicated that transplanting sweet corn is feasible with high quality transplants from seeds that germinate well in disease-free environment. Large sweet corn seeds, large tray cells, and vermiculite-based growing media proved to gave higher germination percentages. While same factors did not show pronounced effect on seedling performance in terms of root and shoot length and fresh weight. In the priming experiment, the bio-priming treatment showed the highest germination of seeds percentage among other priming treatments and the control. Sweet corn seeds treated with Bacillus megaterium germinated 50% higher than seeds treated with Trichoderma spp. as bio-control agents. Aspergillus niger, and Penicillium represented 65% of pathogens responsible for failure of sweet corn seed germination. The results of this study demonstrated the feasibility of enhanced sweet corn seed propagation through transplanting and seed priming to improve emergence and field stand.

Rozmnażanie Super Słodkiej Kukurydzy Cukrowej: Badania Nad Kondycjonowaniem Nasion Oraz Produkcją Z Rozsady

Uprawa mieszańców kukurydzy cukrowej z genotypami o wysokiej zawartości cukru (sh2) jest utrudniona ze względu na słabe wschody nasion. Badania przeprowadzono w celu określenia wpływu wielkości nasion, wielkości komórek w paletach rozsadowych i komponentów podłoży uprawowych na młode rośliny kukurydzy cukrowej. Drugim celem badań była ocena wpływu kondycjonowania nasion kukurydzy cukrowej na kiełkowanie nasion w polu. Zastosowano bio-priming przy użyciu grzybów Trichoderma i bakterii Bacillus, osmopriming w roztworze KNO3 oraz hydropriming w H2O. Badania wykazały, że przesadzanie kukurydzy cukrowej jest możliwe pod warunkiem zastosowania wysokiej jakości rozsady uzyskanej z nasion dobrze kiełkujących w wolnym od chorób środowisku. Duże nasiona, duże komórki w paletach rozsadowych oraz podłoża na bazie wermikulitu sprzyjały kiełkowaniu nasion kukurydzy cukrowej. Natomiast te same czynniki nie wykazały wyraźnego wpływu na wzrost sadzonek pod względem długości korzeni i pędów oraz świeżej masy. W doświadczeniu z kondycjonowaniem nasion traktowanie mikroorganizmami dało najwyższy procentowy udział kiełkujących nasion w porównaniu do pozostałych zabiegów kondycjonowania i kombinacji kontrolnej. Nasiona traktowane bakteriami Bacillus megaterium kiełkowały o 50% lepiej niż nasiona traktowane grzybami Trichoderma spp.

Aspergillus niger i Penicillium stanowiły 65% patogenów odpowiedzialnych za porażenie nasion kukurydzy cukrowej. Wyniki badań wykazały możliwość rozmnażania super słodkiej kukurydzy cukrowej z rozsady oraz wykorzystanie kondycjonowania nasion dla poprawy wschodów oraz obsady roślin na polu.

Keywords: sweet corn; transplanting; seed size; tray cell size; seed priming; bio-priming; Bacillus megaterium; Trichoderma spp

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