PJB-2023-296
Sankar C
Abstract
Polyploidy has an immense role in varietal development of agricultural crops particularly fruit crops which has significant impact on plant morphological and yield contributing traits. To study the effect of ploidy levels on growth and yield parameters between diploid, triploid and tetraploid progeny of banana hybrids, 46 banana hybrids were evaluated under field conditions. Stomatal size, pollen size, growth and bunch traits were measured in flowering phase. Significant difference between ploidy levels were observed for different traits. The “gigas” effect was seen in tetraploid plants. Ploidy levels were negatively linked with stomatal frequency and positively linked with guard cell length, number of chloroplasts per guard cell. Among the progenies, maximum pollen diameter was observed in tetraploids . However, triploids registered higher bunch and finger characters whereas diploids exhibits higher stomata frequency, pollen viability, germination, more suckers per plant, shorter time to phyllochron production, earlier flowering and harvest.
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