It was observed that
self-pollination resulted in rapid decline in fruit setting than open-pollination in ‘Amrapali’ and ‘Mallika’
as compared to ‘Pusa Arunima’ and ‘Pusa Surya’. At 48 h after self-pollination, pollen tube growth in the
stylar region of ‘Amrapali’ and ‘Mallika’ was considerably slower than ‘Pusa Arunima’ and ‘Pusa Surya’
and their pollen tube reached up to two-third of the stylar region. However, in case of ‘Pusa Arunima’ and
‘Pusa Surya’ pollen tube reached up to the micropylar end. Self-pollination resulted in 75% degenerated
ovules in ‘Amrapali’ and ‘Mallika’, which dropped within 21 days after pollination (DAP). In contrast, openpollination
resulted in only 20% degenerated ovules in these mango cultivars. The growth of fruitlets and
ovules obtained from self- and open-pollination revealed that the fruitlets weight and dimensions of
fruitlets and ovules were significantly less in self-pollinated as compared to open-pollinated ‘Amrapali’,
‘Mallika’ and ‘Pusa Arunima’, whereas no significant differences were observed in fruitlet weight and
dimension of fruitlets and ovules obtained in self- and open-pollinated ‘Pusa Surya’. The present findings
bring out clearly that mango cultivars ‘Mallika’ and ‘Amrapali’ are self-incompatible, whereas, cultivars
‘Pusa Arunima’ and ‘Pusa Surya’ are self-compatible.
It was observed that
self-pollination resulted in rapid decline in fruit setting than open-pollination in ‘Amrapali’ and ‘Mallika’
as compared to ‘Pusa Arunima’ and ‘Pusa Surya’. At 48 h after self-pollination, pollen tube growth in the
stylar region of ‘Amrapali’ and ‘Mallika’ was considerably slower than ‘Pusa Arunima’ and ‘Pusa Surya’
and their pollen tube reached up to two-third of the stylar region. However, in case of ‘Pusa Arunima’ and
‘Pusa Surya’ pollen tube reached up to the micropylar end. Self-pollination resulted in 75% degenerated
ovules in ‘Amrapali’ and ‘Mallika’, which dropped within 21 days after pollination (DAP). In contrast, openpollination
resulted in only 20% degenerated ovules in these mango cultivars. The growth of fruitlets and
ovules obtained from self- and open-pollination revealed that the fruitlets weight and dimensions of
fruitlets and ovules were significantly less in self-pollinated as compared to open-pollinated ‘Amrapali’,
‘Mallika’ and ‘Pusa Arunima’, whereas no significant differences were observed in fruitlet weight and
dimension of fruitlets and ovules obtained in self- and open-pollinated ‘Pusa Surya’. The present findings
bring out clearly that mango cultivars ‘Mallika’ and ‘Amrapali’ are self-incompatible, whereas, cultivars
‘Pusa Arunima’ and ‘Pusa Surya’ are self-compatible.
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