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Pollen morphology, viability and in vitro germination across diverse genotypes of marigold (Tagetes erecta L.)

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Analysis reveals pollen morphology and viability in Tagetes erecta, highlighting implications for breeding.

Pollen morphology and viability varied significantly among marigold genotypes, impacting breeding strategies.
The highest pollen viability, recorded at 96.66%, occurred in the genotype IIHRMY 1-4 using acetocarmine.
Assessment using scanning electron microscopy demonstrated pollen grains had a polar/equatorial ratio of 0.84 to 0.88.
Optimal in vitro germination was achieved with a medium containing 15% sucrose and 15% polyethylene glycol.

Veeresh et al. (2025) studied this question.

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