Musa × parahaekkinenii (Musaceae): A new artificial interspecific hybrid from Kerala, India

Smisha, K. P.; Sabu­, M.

doi:10.3329/bjpt.v25i2.39521

Cited by 2 publications

(5 citation statements)

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“…The size of the grains was similar to those of D. biflora (25 μm) and anther dehiscence started 16–17 h earlier than did anthesis, making the one‐day flowers protandrous (Smisha et al., 2016). Pollen contained protein but no starch or lipids, and its viability declined steadily by the end of the day of anthesis (Smisha et al., 2016). The Australasian pollen and spore atlas (ANU, 2023) presents photographs of a few pollen grains of D. castaneifolia (dicolpate, tricolpate) from Papua New Guinea, with corolla that presumably opens.…”

Section: Discussionmentioning

confidence: 76%

“…The literature search showed few studies on Dillenia pollen; they were not specifically looking for heteromorphy. Aperture heteromorphy (assumed, since it was not clear whether the samples were from the same individuals) occurred in a few species: D. suffruticosa (tri‐ to tetracolpate; Dickison, 1967; Smisha et al., 2016), D. ovata (tri‐ to tetracolpate; Dickison, 1967; Rakarcha et al., 2018), D. luzoniensis (tri‐ to tetracolpate; Dickison, 1967), D. phillipensis (tri‐ to tetracolpate; Rakarcha et al., 2018) and D. castaneifolia (dicolpate, tricolpate; ANU, 2023). Dillenia andamanica was noted as triporate, but only six grains were examined (Ganga Kailas et al., 2017).…”

Section: Resultsmentioning

confidence: 99%

“…One had 1.5 times more tetracolpate than tricolpate grains, whereas tricolpate grains dominated the other two, one by nearly double the number and the other nearly nine times the number of tetracolpate grains. The fact that heteromorphy (or possibly polymorphism – not specified) was observed in India for D. suffruticosa , a nectarless plant pollinated principally by bees (Smisha et al., 2016, as it is also in Malaysia, Tokumoto et al., 2014) indicates that this character is not reserved to bat‐pollinated plants. The size of the grains was similar to those of D. biflora (25 μm) and anther dehiscence started 16–17 h earlier than did anthesis, making the one‐day flowers protandrous (Smisha et al., 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The fact that heteromorphy (or possibly polymorphism – not specified) was observed in India for D. suffruticosa , a nectarless plant pollinated principally by bees (Smisha et al., 2016, as it is also in Malaysia, Tokumoto et al., 2014) indicates that this character is not reserved to bat‐pollinated plants. The size of the grains was similar to those of D. biflora (25 μm) and anther dehiscence started 16–17 h earlier than did anthesis, making the one‐day flowers protandrous (Smisha et al., 2016). Pollen contained protein but no starch or lipids, and its viability declined steadily by the end of the day of anthesis (Smisha et al., 2016).…”

Section: Discussionmentioning

confidence: 99%

Section: Pollen Heteromorphymentioning

confidence: 99%

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Dillenia (Dilleniaceae) pollen heteromorphy and presentation, and implications for pollination by bats

Petit,

Scanlon,

Naikatini

et al. 2024

Ecology and Evolution

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Bat pollination of Dillenia in Fiji, a genus that was presumed to be pollinated by bees, posits that other Dillenia species may be bat‐pollinated, with implications for conservation and the understanding of angiosperm evolution. Botanical descriptions of some corolla behaviours (‘falling as a whole’) suggest bat removal of permanently closed corollas, as in D. biflora. Considering the remoteness of species of interest, we reviewed some Dillenia floral traits to hypothesise what they may mean for bat pollination of the genus. We investigated D. biflora pollen grains apertures and reviewed Dillenia literature concerning corolla behaviour and colour, and pollen apertures and presentation, including pores and staminodes. Our samples had dramatically different ratios of tricolpate to tetracolpate pollen grains, a trait that does not exclude pollination by bees. Petal colour polymorphism occurs, with mixed colours proportionately less common in flowers with corollas that open. The proportion of species with staminodes did not differ between those presumed to be pollinated by bats and others, but anthers of the former were significantly more likely to have apical pores, and stamens all had similar length or were slightly longer in the middle, whereas stamens in two distinct groups occurred in 55% of bee‐pollinated species. Pollen heteromorphy may facilitate pollination by different taxa in tropical environments. However, anther apical pores and stamen uniformity are more likely to be associated with bat‐pollinated species than are other morphologies. Dillenia could be a useful model to examine evolutionary aspects of colour, heteranthery, staminodes and pollen heteromorphy. Only field work will verify bat pollination and the implications of bat dependence for Dillenia species.

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Section: Discussionmentioning

confidence: 76%