Evaluation of five teak (Tectona grandis L. F.) provenances for germination test to find out reasons of low germination

Dhaka, Ravindra Kumar

doi:10.18782/2320-7051.5930

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Under in vitro conditions, there was a substantial connection between survival rate and seedling growth. In this study, the Andra Pradesh seed source had quite a better seedling growth and survival rate in vitro, reflecting the findings of Akram and Aftab (2016) and Dhaka and Jha (2017). At 28 days after sowing, true seed germination was recorded at 58% of the true seeds from dry deciduous forest (Andhra Pradesh).…”

Section: Physiological Parameterssupporting

confidence: 84%

“…Mechanical dormancy has been established by Rajput and Tiwari (2001) as a stony endocarp of teak fruit acting as a mechanical barrier to germination that emerging radicles cannot traverse without opening valves (Hill, 1933). Mechanical dormancy, rather than physical hibernation, was demonstrated by Slator et al, 2013. Teak's slow germination is sometimes related to the endocarp's participation in softening (Keiding, 1985;Tewari, 1992;Yadav, 1992;Tewari et al, 2004;Dhaka and Jha, 2017;Masilamani et al, 2020).…”

Section: Physiological Parametersmentioning

confidence: 99%

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Evaluation of Dormancy Mechanism in Teak (Tectona grandis Linn.f) True Seeds Collected from Multiple Provenances and Forest Types of India

et al. 2024

MAJ

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Teak drupes were collected from seven geographical locations spread over four forest types (dry deciduous, moist deciduous, very moist deciduous, and semi-deciduous) from India. In order to study the dormancy mechanism associated with teak true seeds. The true seeds present inside the drupes from each provenance were extracted without causing any damage to the true seeds. The extracted true seeds were used to study the morphological and physiological characteristics. The true seeds were carefully inoculated in MS medium to observe germination. Twenty-eight days after sowing, the result revealed that Andhra Pradesh provenance recorded the highest true seed germination of 58 percent compared to all other provenances. These results clearly indicate that not only physical and mechanical dormancy is involved in teak for decreased germination but also morphological/physiological dormancy plays a major role in teak true seed germination.

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Section: Physiological Parameterssupporting

confidence: 84%

Section: Physiological Parametersmentioning

confidence: 99%

Evaluation of Dormancy Mechanism in Teak (Tectona grandis Linn.f) True Seeds Collected from Multiple Provenances and Forest Types of India

et al. 2024

MAJ

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“…The historical aspects of the tetrazolium test from its development [13] to the applicability of 2,3,5-Triphenyl Tetrazolium Chloride (TTC) to the quick viability test in conifers species [14] for the restoration [15] and conservation ecology [16] as well as in endangered pine species [17]. Seed dormancy is common in most of the forest tree species [18,19]. Tetrazolium test (TZ) also provides a quicker knowledge to obtain seed viability even when a seed in a state of dormancy [20].…”

Section: Introductionmentioning

confidence: 99%

Standardization of Quick Seed Viability Protocol for Pinus roxburghii Sarg. Using Tetrazolium Assay

Dhaka,

Thakur,

Kaler

et al. 2024

JABB

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Chir pine (Pinus roxburghii) is one of the important tree species among five indigenous pine species of the Himalayan region and is widely distributed throughout the Himalaya. It is used as a commercial timber, fuel wood and pulpwood and also provide resin for various utilities. For the ecological, silvicultural and economical significance, the regeneration of this species is required for restoration and conservation purposes. Before seed sowing in nursery, there is need to know the actual seed vigour and quality of seeds. Therefore, the present experiment was conducted at Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh of India to standardized a quick seed viability testing protocol using tetrazolium (TZ) and confirmed with laboratory seed germination testing. The tetrazolium test and germination test were conducted with 100 seeds in 4 replications in CRD design as per the procedure devised by ISTA and analyzed with OPSTAT statistical software. After pre-moistening, chir pine seeds were cut longitudinally into two parts away from the radicle end to expose the embryo. The seeds of the species stained with 0.5, 1.0, 1.5 and 2.0 % solution of TZ and incubated at 25, 30 and 35 °C temperature in the darkness for 12, 24 and 36 hours. The result of TZ test showed that the seeds of chir pine soaked in 0.5 % tetrazolium solution at 25 °C temperature for 24 hours found to be the best one for the seed vigour and seed quality testing. For predicting the accurate seed viability, RMS (root mean square) method was used and recognized six staining seed categories distinguished 1 to 6. Seed category 1 denoted as viable seeds and category 6 as non-viable seeds. Result showed that the topographical staining categories 1, 2 and 3 provided least root mean square value and recommended these as viable seed categories for TZ seed viability test. Furthermore, it is also compared with laboratory seed germination test to standardize the seed viability protocol and result in line with the conformity. Overall, the results of the present study fulfilled all the gaps and criteria of quick seed viability testing in chir pine species and standardized protocol could be used for future seed vigour testing within a short period of time for the forest restoration and conservation purpose.

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Clonal Teak

Monteuuis¹

2021

Compendium of Plant Genomes

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Evaluation of five teak (Tectona grandis L. F.) provenances for germination test to find out reasons of low germination

Cited by 5 publications

References 4 publications

Evaluation of Dormancy Mechanism in Teak (Tectona grandis Linn.f) True Seeds Collected from Multiple Provenances and Forest Types of India

Evaluation of Dormancy Mechanism in Teak (Tectona grandis Linn.f) True Seeds Collected from Multiple Provenances and Forest Types of India

Standardization of Quick Seed Viability Protocol for Pinus roxburghii Sarg. Using Tetrazolium Assay

Clonal Teak

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