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RESEARCH ARTICLE
Contents Vol 56(1)

Floral phenology in relation to pollination and reproductive output in Commelina caroliniana (Commelinaceae)

Veenu Kaul A B and A. K. Koul A
+ Author Affiliations
- Author Affiliations

A University of Jammu, Department of Botany, Jammu 180006, India.

B Corresponding author. Email: veenukaul@yahoo.co.in

Australian Journal of Botany 56(1) 59-66 https://doi.org/10.1071/BT05106
Submitted: 17 June 2005  Accepted: 11 September 2007   Published: 7 February 2008

Abstract

Commelina caroliniana Walter is an andromonoecious rainy-season weed. It bears staminate and hermaphrodite flowers in spathes. In some spathes, structurally hermaphrodite flowers of the third and fourth orders function either as male or female. The flowers are structured for cross-pollination. Events of floral biology suggest weak protandry which also contributes to cross-pollination. Large numbers of hymenopterans (nine species) visited the flowers and transferred pollen to stigmas. Whenever cross-pollination failed, selfing took over. Auto-fertility and self-compatibility indices revealed that the plants were self-compatible. Only some flowers of the third and fourth orders within a spathe were partially self-compatible. These facts notwithstanding, manual cross-pollination of flowers yields increased fruit and seed set.


Acknowledgements

We thank the Head of the Department of Botany, University of Jammu for providing facilities. CSIR, New Delhi, provided financial assistance to V.K. in the form of Junior and Senior Research Fellowships during the course of this research. The division of Entomology, Indian Agricultural Research Institute, New Delhi helped in insect identification. Special thanks to Dr Robert. B. Faden (Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC) for identifying the study material, painstakingly going through the herbarium specimens and thorough discussions on Commelinaceae. Amit and Vikram are gratefully acknowledged for their technical expertise.


References


Anderson AN (1990) Andromonoecy in four Australian species of Leptospermum. Australian Journal of Botany 38, 1374–1381. open url image1

Anderson GJ, Symon DE (1989) Functional dioecy and andromonoecy in Solanum. Evolution 43, 204–219.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Buttrose MS, Grant WJR, Lott JNA (1977) Reversible curvature of style branches of Hibiscus trionum L., a pollination mechanism. Australian Journal of Botany 25, 567–570.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Charlesworth D (1984) Androdioecy and the evolution of dioecy. Biological Journal of Linnaean Society 23, 333–348.
| Crossref |
open url image1

Charlesworth D (1989) Why do plants produce so many more ovules than seeds? Nature 338, 21–22.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Charnov EL (1979) The genetical evolution of patterns of sexuality: Darwinian fitness. American Naturalist 113, 465–480.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Chaturvedi SK (1989) A new device of self-pollination in Boerhaavia diffusa L. (Nyctaginaceae). Beitrage Biologie Pflanzen 64, 55–58. open url image1

Diggle PK (1991) Labile sex expression in andromonoecious Solanum hirtum: floral morphogenesis and sex determination. American Journal of Botany 78, 377–393.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Diggle PK (1993) Developmental plasticity, genetic variation, and the evolution of andromonoecy in Solanum hirtum (Solanaceae). American Journal of Botany 80, 967–973.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Diggle PK (1994) The expression of andromonoecy in Solanum hirtum (Solanaceae): phenotypic plasticity and ontogenetic contingency. American Journal of Botany 81, 1354–1365.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Emms SK (1993) Andromonoecy in Zigadenus paniculatus (Liliaceae): spatial and temporal patterns of sex allocation. American Journal of Botany 80, 914–923.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Emms SK (1996) Temporal patterns of seed set and decelerating fitness returns on female allocation in Zigadenus paniculatus (Liliaceae): an andromonoecious lily. American Journal of Botany 83, 304–315.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Gopinathan MC, Babu CR (1987) Breeding systems and pollination in Vigna minima (Leguminosae, Papilionideae). Plant Systematics and Evolution 156, 117–126.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Hrycan WC, Davis AR (2005) Comparative structure and pollen production of the stamens and pollinator-deceptive staminodes of Commelina coelestis and C. dianthifolia (Commelinaceae). Annals of Botany 95, 1113–1130.
| Crossref | GoogleScholarGoogle Scholar | PubMed | open url image1

Jacquemart AL (1996) Selfing in Narthecium ossifragum (Melanthiaceae). Plant Systematics and Evolution 203, 99–110.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Kaul V (1998) Resource allocation in relation to floral structure and breeding system in some members of Commelinaceae. PhD Thesis, University of Jammu, Jammu and Kashmir, India.

Koul P, Koul AK, Hamal IA (1984) Floral biology of Torilis leptophylla (L.) Reichensf. Proceedings of Indian Academy of Science 93, 449–454. open url image1

Lloyd DG, Schoen DJ (1992) Self-fertilization and cross fertilization in plants. 1. Functional dimensions. International Journal of Plant Sciences 153, 358–369.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Lovett-Doust J (1980) Floral sex ratios in andromonoecious Umbelliferae. New Phytologist 85, 265–273.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Maheshwari P, Maheshwari JK (1955) Floral dimorphism in Commelina forskalaei Vahl and C. benghalensis L. Phytomorphology 5, 413–422. open url image1

Maheshwari P, Singh B (1934) A preliminary note on the morphology of aerial and underground flowers of Commelina benghalensis Linn. Current Science 3, 158–160. open url image1

May PG, Spears E (1988) Andromonoecy and variation in phenotypic gender of Passiflora incarnate (Passifloreae). American Journal of Botany 75, 1830–1841.
| Crossref | GoogleScholarGoogle Scholar | open url image1

McCollum TM , Estes JR , Sullivan JR (1984) Reproductive biology of Commelina erecta (Commelinaceae). In ‘Festschrift for Walter W. Dalquest’. (Ed. NVJ Horner) pp. 57–66. (Wichita Falls, Mid Western State University Press: Texas)

Narbona E, Ortiz PL, Arista M (2002) Functional andromonoecy in Euphorbia (Euphorbiaceae). Annals of Botany 89, 571–577.
| Crossref | GoogleScholarGoogle Scholar | PubMed | open url image1

Primack RB, Lloyd DG (1980) Andromonoecy in the New Zealand montane shrub Manuka, Leptospermum scoparium (Myrtaceae). American Journal of Botany 67, 361–368.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Rendle AF (1925) ‘The classification of flowering plants. Vol. II.’ (Cambridge University Press: London)

Schoen DJ (1982) Male reproductive effort and breeding system in an hermaphrodite plant. Oecologia 53, 255–257.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Shivanna KR , Rangaswamy NS (1992) ‘Pollen biology—a laboratory manual.’ (Springer-Verlag: Berlin)

Sokal RR , Rohlf JF (1973) ‘Introduction to biostatistics.’ (Freeman: San Francisco)

Solomon BP (1985) Environmentally influenced changes in sex expression in an andromonoecious plant. Ecology 66, 1321–1332.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Stephenson AG (1979) An evolutionary examination of floral display in Catalpa speciosa (Bignoniaceae). Evolution 33, 1200–1209.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Sutherland S (1982) The pollination biology of paniculate agaves: documenting the importance of male fitness in plants. PhD Thesis, University of Arizona, Tucson, AZ.

Sutherland S (1986a) Floral sex ratios, fruit set, and resource allocation in plants. Ecology 67, 991–1001.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Sutherland S (1986b) Patterns of fruit set: what controls fruit–flower ratios in plants? Evolution 40, 117–128.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Symon DE (1979) Sex forms in Solanum (Solanaceae) and the role of pollen collecting insects. In ‘The biology and taxonomy of Solanaceae’. (Eds JG Hawkes, RN Lester, AD Skelding) pp. 385–397. (Academic Press: London)

Symon DE (1981) A revision of genus Solanum in Australia. Journal of the Adelaide Botanic Gardens 4, 1–367. open url image1

Whalen MD , Costich DE (1986) Andromonoecy in Solanum. In ‘Solanaceae: biology and systematics’. (Ed. WG D’Arcy) pp. 284–302. (Columbia University Press: New York)

Willson MF (1983) ‘Plant reproductive ecology.’ (John Wiley and Sons: New York)

Willson MF, Price PW (1997) The evolution of inflorescence size in Asclepias species. Evolution 35, 495–511. open url image1

Wyatt R (1984) Evolution of self-pollination in granite outcrop species of Arenaria (Caryophyllaceae). Reproductive effort and pollen–ovule ratios. Systematic Botany 9, 432–440.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Yampolsky C, Yampolsky H (1922) Distribution of sex forms in the phanerogamic flora. Bibliotheca Genetica 3, 1–62. open url image1