Influence of plant growth regulators on sex differentiation and floral characteristics of pomegranate flowers: a case of brassinosteroids

• Autorzy: Gokbayrak Z. , Engin H.
• Języki publikacji: EN

Abstrakty

EN

The objective of the present study was to determine the effects of brassinosteroid application on the sex determination and floral growth of pomegranate flowers. Whole tress of Punica granatum ‘Mayhoş-8’ were sprayed with 0.001, 0.01, and 0.1 mg L⁻¹ 28-homobrassinolide (Hbr) at bud break. The selection of flowers was based on the appearance of a visible pistil/stigma and shape of the ovary of intact flowers. Grouping of bisexual flowers was based on their flower position, i.e., single, terminal, and lateral flowers, during the first flush of flowering in mid-June. Approximately 20 days and 40 days after spraying, 100 randomly chosen bisexual flowers per collection time were collected and measurements of floral parts were immediately taken. The differences between bisexual and functional male flowers were not distinct enough to assert any significant effects from the different Hbr treatments. Irrespective of treatments, the percentage of male flowers was higher than that of bisexual flowers. Hbr treatments applied at the bud break period had significant effects only on bisexual flowers that developed as single flowers. Applying 0.01 mg L⁻¹ Hbr produced comparably lower percentages of single bisexual flowers (53.4%). Although the 0.1 and 0.001 mg L⁻¹ Hbr treatments resulted in increased percentages of bisexual flowers, the difference was not significant. For the first collection time (mid-June), the effects of Hbr concentration on the size of the floral parts for bisexual flowers were only significant in ovary width and stigma diameter. As the concentration decreased, smaller ovaries were obtained. During the second flowering, application of 0.01 mg L⁻¹ Hbr considerably increased the overall sizes of floral parts in bisexual flowers. Hbr might affect the ratio of flower formation in certain positions on a branch and could influence the growth of floral parts in bisexual flowers. Further elucidation of these effects would help to better understand floral organ development in plants.

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2018
• Tom: 87
• Numer: 3
• Opis fizyczny: Article 3589 [6p.],fig.,ref.

Twórcy

autor

Gokbayrak Z.

• Department of Horticulture, Faculty of Agriculture, Canakkale Onsekiz Mart University, 17020 Canakkale, Turkey

autor

Engin H.

• Department of Horticulture, Faculty of Agriculture, Canakkale Onsekiz Mart University, 17020 Canakkale, Turkey

Bibliografia

• 1. Papadopoulou E, Grumet R. Brassinosteroid-induced femaleness in cucumber and relationship to ethylene production. HortScience. 2005;40(6):1763–1767.
• 2. Jayaram KM, Neelakandan M. Effect of plant growth regulators on sex determination in Solanum melongena Linn. Indian J Plant Physiol. 2000;5(3):44–51.
• 3. Makwana V, Shukla P, Robin P. GA application induces alteration in sex ratio and cell death in Jatropha curcas. Plant Growth Regul. 2010;61:121–125. https://doi.org/10.1007/s10725-010-9457-x
• 4. Chailakhyan MK, Khryanin VN. Effect of growth regulators and role of roots in sex expression in spinach. Planta. 1978;142:207–210. https://doi.org/10.1007/BF00388214
• 5. Goswami JD, Patel NM, Bhadauria HS, Wankhade VR. Effect of plant growth substances on growth, fruit setting and yield of pomegranate cv. Sinduri. International Journal of Agricultural Sciences. 2013;9(1):332–334.
• 6. Zhang J, Shi J, Ji G, Zhang H, Gong G, Guo S, et al. Modulation of sex expression in four forms of watermelon by gibberellin, ethephone and silver nitrate. Hortic Plant J. 2017;3(3):91–100. https://doi.org/10.1016/j.hpj.2017.07.010
• 7. Banks JA, Hickok L, Webb MA. The programming of sexual phenotype in the homosporous fern Ceratopteris richadii. Int J Plant Sci. 1993;154:522–534. https://doi.org/10.1086/297135
• 8. Jindal KK, Singh RN. Modification of flowering pattern and sex expression in Carica papaya by morphactin, ethephon and TIBA. Zeitschrift für Pflanzenphysiologie. 1976;78(5):403–410. https://doi.org/10.1016/S0044-328X(76)80086-4
• 9. Hartwig T, Chuck GS, Fujioka S, Klempien A, Weizbauer R, Potluri DPV, et al. Brassinosteroid control of sex determination in maize. Proc Natl Acad Sci USA. 2011;108:19814–19819. https://doi.org/10.1073/pnas.1108359108
• 10. Manzano S, Martínez C, Megías Z, Gómez P, Garrido D, Jamilena M. The role of ethylene and brassinosteroids in the control of sex expression and flower development in Cucurbita pepo. Plant Growth Regul. 2011;65:213–221. https://doi.org/10.1007/s10725-011-9589-7
• 11. Engin H, Gokbayrak Z. Effect of epibrassinolide, gibberellic acid and naphthalene acetic acid on pollen germination of some pomegranate cultivars. ÇOMÜ Ziraat Fakültesi Dergisi. 2015;3(2):19–25.
• 12. Engin H, Gokbayrak Z. In vitro pollen viability and germination of bisexual and functional male flowers of some Turkish pomegranate cultivars. Agriculture and Forestry. 2016;62(4):91–94. https://doi.org/10.17707/AgricultForest.62.4.11
• 13. Dellaporta SL, Calderon-Urrea A. Sex determination in flowering plants. Plant Cell. 1993;5:1241–1251. https://doi.org/10.2307/3869777
• 14. Chaudhari SM, Desai UT. Effects of plant growth regulators on flower sex in pomegranate (Punica granatum L.). Indian Journal of Agricultural Sciences. 1993;63:34– 35.
• 15. Wetzstein HY, Yi W, Porter JA. Flower position and size impact ovule number per flower fruit set, and fruit size in pomegranate. J Am Soc Hortic Sci. 2013;138:159–166.
• 16. Abubakar AR, Ashraf N, Ashraf M. Effect of plant biostimulants on growth, chlorophyll content, flower drop and fruit set of pomegranate cv. Kandhari Kabuli. International Journal of Agriculture, Environment and Biotechnology. 2013;6(2):305–309.

Identyfikatory

DOI

10.5586/asbp.3589