Floral Biology, Pollination, Pistil Receptivity, and Pollen Tube Growth of Teak (Tectona grandisLinn f.)

Tangmitcharoen, Suwan; Owens, John N.

doi:10.1006/anbo.1996.0317

Cited by 70 publications

(60 citation statements)

References 61 publications

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“…Then the amount of pollen per anther and flowerlet was estimated based on the pollen number in the 0.1 ml of liquid. The technique was modified based on previous researches [15,35].…”

Section: Pollen Production and Structure Measurementmentioning

confidence: 99%

“…Self-incompatibility could act in the stigma, style or ovary, or even during development of the embryo [59]. A number of the pollen tubes in self-pollinated flowers or afflicted with gametophytic self-incompatibility terminated in the style [58], but most were inhibited in the ovary [35]. A different mechanism could perhaps explain the phenomenon in cases of gametophytic self-incompatibility [60,61].…”

Section: Pollen-tube Growth and Weak Self-incompatibilitymentioning

confidence: 99%

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Protogynous, pollen limitation and low seed production reasoned for the dieback of Spartina anglica in coastal China

Zhi

et al. 2008

Plant Science

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“…Then the amount of pollen per anther and flowerlet was estimated based on the pollen number in the 0.1 ml of liquid. The technique was modified based on previous researches [15,35].…”

Section: Pollen Production and Structure Measurementmentioning

confidence: 99%

Section: Pollen-tube Growth and Weak Self-incompatibilitymentioning

confidence: 99%

Protogynous, pollen limitation and low seed production reasoned for the dieback of Spartina anglica in coastal China

Zhi

et al. 2008

Plant Science

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“…The species grows naturally in a wide range of environmental conditions from dry places with only 500 mm annual rain up to areas with 5000 mm-but optimum conditions are in areas having between 1200 and 2500 mm rainfall annually (Kaosa-ard 1981). Teak is a light-demanding (Soerianegara and Lemmens 1994), mainly insect-pollinated and outcrossing species (Bryndum and Hedegart 1969;Hedegart 1973;Kjaer and Suangtho 1995;Kertadikara and Prat 1995a;Tangmitcharoen and Owens 1997).…”

Section: Introductionmentioning

confidence: 99%

Genetic resources of teak (Tectona grandis Linn. f.)—strong genetic structure among natural populations

Hansen

Changtragoon

Ponoy

et al. 2014

Tree Genetics & Genomes

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Twenty-nine provenances of teak (Tectona grandis Linn. f.) representing the full natural distribution range of the species were genotyped with microsatellite DNA markers to analyse genetic diversity and population genetic structure. Provenances originating from the semi-moist east coast of India had the highest genetic diversity while provenances from Laos showed the lowest. In the eastern part of the natural distribution area, comprising Myanmar, Thailand and Laos, there was a strong clinal decrease in genetic diversity the further east the provenance was located. Overall, the pattern of genetic diversity supports the hypothesis that teak has its centre of origin in India, from where it spread eastwards. The analysis of molecular variance (AMOVA) gave an overall highly significant F st value of 0.227-population pairwise F st values were in the range 0.01-0.48. Applying the G″ st differentiation parameter, the estimated overall differentiation was 0.632, implying a strong genetic structure among populations. A neighbour-joining (NJ) tree, using the pairwise population matrix of G″ st values as input, contained three distinct groups: (1) the eight provenances from Thailand and Laos, (2) the Indian provenances from the dry interior and the moist west coast and (3) the provenances from northern Myanmar. The provenances from southern Myanmar were placed close to the root of the tree together with the three provenances from the semi-moist east coast of India. A Bayesian cluster analysis using the STRUCTURE software gave very similar results, with three main clusters, each containing two sub-clusters, while Bayesian cluster analysis in the Geneland software, exploiting the spatial coordinates of the provenances, resulted in five clusters in accordance with the former results. The implications of the findings for conservation and use of genetic resources of the species are discussed.

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“…The natural provenances of teak exhibit differences in phenology (Bedell 1989;Kaosa-ard 1999), floral biology and seed biology Vasudeva 2002, 2003;Nagarajan et al 1996;Tangmitcharoen and Owens 1997a;Vasudeva et al 2004). Teak fruit size, weight and viability vary among natural provenances and seed production according to the ecological conditions (Gupta and Pattanath 1975;Indira 2003;Kaosa-ard 1986;Mathew and Vasudeva 2003;Nagarajan et al 1996;Palupi and Owens 1998;Sivakumar et al 2002;Tangmitcharoen and Owens 1997b).…”

Section: Introductionmentioning

confidence: 99%

Diversity and genetic structure of teak (Tectona grandis L.f) in its natural range using DNA microsatellite markers

et al. 2008

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Teak (Tectona grandis L.f.) is considered to be an extraordinarily durable building timber with a worldwide reputation. Its widespread use has entailed the overexploitation of natural forests and a large reduction in natural diversity. Fifteen microsatellite markers were used to study the genetic variability and structure of 166 teak trees distributed over the whole natural area of teak. Analysis showed that in the teak natural area there were four main centers of genetic variability. Two clusters were in India and could be considered as main centers of genetic diversity in teak. The third cluster mainly consisting of populations in Thailand and Laos was genetically very distinct from the Indian populations but presented only half as much allelic variability. A fourth cluster from Central Laos showed even less genetic variability. The use of SSR markers for conservation of teak forest diversity is discussed.

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Floral Biology, Pollination, Pistil Receptivity, and Pollen Tube Growth of Teak (Tectona grandisLinn f.)

Cited by 70 publications

References 61 publications

Protogynous, pollen limitation and low seed production reasoned for the dieback of Spartina anglica in coastal China

Protogynous, pollen limitation and low seed production reasoned for the dieback of Spartina anglica in coastal China

Genetic resources of teak (Tectona grandis Linn. f.)—strong genetic structure among natural populations

Diversity and genetic structure of teak (Tectona grandis L.f) in its natural range using DNA microsatellite markers

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