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    Pollen production pattern in the capitulum of the cultivated sunflower (Helianthus annuus L.)

    Astiz V1, LF Hernández2,3

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 27-36, 2014, DOI:10.32604/phyton.2014.83.027

    Abstract The intra-plant pollen production in cultivated sunflower (Helianthus annuus L.) was quali- and quantitatively studied. Two modern self-pollinated, high oleic sunflower hybrids were grown during two consecutive seasons: 2009 in three planting dates, and 2010 in two planting dates. Two cross-pollinated varieties of sunflower, Hopi and Havasupai, were also studied to determine if an anomalous intracapitulum pollen gradient observed in preliminary studies could be a remnant character inherited from primitive genotypes. Pollen grains per flower (PGF), anther volume (AV), pollen grain volume (PGV) and pollen viability (PV) were measured in three capitulum sectors, external (ES), middle… More >

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