Influence of gibberellic acid and temperature on seed germination in Chilgoza pine (Pinus gerardiana Wall.)

Kumar, Raj; Shamet, G. S.; Mehta, Harsh; Alam, N. M.; Tomar, J. M. S.; Chaturvedi, O. P.; Khajuria, Neetan

doi:10.1007/s40502-014-0119-2

Cited by 17 publications

(13 citation statements)

References 9 publications

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“…Seeds germinate during the start of the growing season when dormancy is broken by cold stratification in late autumn to early spring (Wanget al, 2010).Betulautilis seeds taken from high altitudes germinated 90% after 12 weeks and 94 percent after 24 weeks of cold stratification (3000 m) (Wanget al,2010).GA3, on the other hand, is an effective germination stimulant (Lavaniaet al, 2006;Sofi and Bhardwaj, 2008). It's possible that the maximum germination after 90 days of stratification and 100 ppm GA3 treatment is related to hormone leaching and gibberellin production in seeds during germination (Kumar et al, 2014;2012;Chenet al, 2008).Stratification (Imbibition Followed By Moist Chilling) and GA3 have mostly been described as a strategy to overcome embryo dormancy. Many studies have shown that stratification improves germination speed and uniformity, both of which are critical factors in creating a uniform seedling crop.…”

Section: Resultsmentioning

confidence: 99%

Review on regeneration status of Betulautilis D. Don: A critically endangered multipurpose timber line species in Indian Himalayan region

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Samant

et al. 2021

ECJ

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The Himalayan birch (Betulautilis D. Don), also known as Bhojpatra in India, is one of the Himalayan region's most important ethnobotanicaltreelinespecies. It aids in the preservation of the Himalaya's fragile environment by preventing soil erosion and conserving the rest of the flora and wildlife below the treelinezone.Betulautilis has been identified for medical (anticancer, anti-HIV, antimicrobial, antioxidant, and anti-inflammatory) and ethno botanical relevance by several ethnic and non-ethnic communities living in the Himalaya and elsewhere, in addition to several ecological benefits.The bark of the Betula tree has long been used to write old manuscripts.It may also be used as a packing material, is waterproof, can be used to roof dwellings, umbrellas, and other items.The historical usage of B. utilis, as well as recent overharvesting to suit community and commercial demands, have put strain on the species natural populations. B. utilis faces numerous threats, including overharvesting, deforestation, erosion, grazing, global warming, and disease attack.Thus, it has been categorized as Critically Endangeredspecies.The main problem of the mountain forestsislack of adequateregenerationprocess. Very little information on population dynamics, regeneration, and physiology and seed germination is available from different parts of the country but no any systematic study has been done so far on multipurpose timberline tree species of Indian Himalayan Region. As a result, it's critical to keep an eye on these sensitive places and keystone species for future changes caused by climate or anthropogenic pressure, especially in locations where baseline data is scarce. The ease and suitability of propagation methods for this species is also not well documented in the literature. With these limitations in mind, the current study aims to document the status of Betulautilis regeneration in the Indian Himalayan region.

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Section: Resultsmentioning

confidence: 99%

Review on regeneration status of Betulautilis D. Don: A critically endangered multipurpose timber line species in Indian Himalayan region

[]

Lata

Samant

et al. 2021

ECJ

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“…Open market prices are very high compared with the local market and best quality seed from the area is exported to other parts of the country and around the world (Akbar et al 2013;Khan et al 2015). In the global market, Pakistan, India and Afghanistan contribute the largest quantities of nut (Akbar et al 2014;Kumar et al 2014). Sample from different ecological sites shows the variation that may be the result of different climatic conditions and can be used to improve cultivation of the species.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity and morphological variation of Pinus gerardiana along the environmental gradient from Zhob, Balochistan, Pakistan

et al. 2021

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Abstract. Gul J, Saeed S, Ahmed A, Leghari SK, Basit A, Rehman A, Khan MZ. 2021. Genetic diversity and morphological variation of Pinus gerardiana along the environmental gradient from Zhob, Balochistan, Pakistan. Nusantara Bioscience 13: 121-128. Pinus gerardiana, an evergreen gymnosperm, is an economically- and ecologically valuable tree found in the Takhte Suleman Mountain Range, Zhob northeastern edge of the Balochistan, Pakistan. The present study is based on the assessment of the impact of environmental gradients with special reference to altitudinal gradient and soil variables on morphological, phytochemicals and genetic variation of P. gerardiana. A total of 27 genotypes of P. gerardiana were collected from the three elevation zones ranging from 2000 - 3500 m above sea level. The genetic diversity was assessed by combined markers, the random amplified polymorphic DNA (RAPD) and the Inter Simple Sequence Repeat (ISSR). Polymorphic bands analyzed the data to generate a dendrogram, based on the unweighted pair group method with arithmetic mean (UPGMA). Morphological characters assessed the morphological characters. Phytochemicals were investigated; the total phenolic content and total flavonoid contents were estimated and compared amongst all accessions. Our results revealed variations along altitudinal gradients and related to soil characteristics. The populations at the Middle altitude zone have greater diversity than populations at lower and higher altitudes. The resulting altitudinal variation can be attributed to various geographical and environmental conditions. These results can help in conservation and cultivation of this economically important tree.

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“…Five samples per seed source, each containing 10 seeds per replicate were considered in measuring the seed dimensions. Further seed germination and emergence observations were recorded up to forty days as per the procedure described by Kumar et al (2014) . Seed weight (g) was recorded as per ISTA standard using an electronic weighing balance.…”

Section: Methodsmentioning

confidence: 99%

Seed and seedling diversity delimitation and differentiation of Indian populations of Melia dubia cav.

Kumar

Banyal

et al. 2022

Saudi Journal of Biological Sciences

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Melia dubia is one of the most important industrial tree species in the South East Asia . In last few decades, the populations of M. dubia has rapidly expanded in the Indian sub-continents, leading to an increase in the genetic diversity of species. However, very less information is available on intra-specific variation in Melia under the Indian subcontinent. Therefore, a present investigation was undertaken, to assess the level of diversity in seed and saplings of the Melia populations (ecotypes) collected from three agro-ecological regions of India. Results revealed that the seed and saplings of all the ecotypes are significantly different for all the traits, except for number of branches per plant, and the maximum variability was recorded in germination percentage, seed weight, internodal length, and sapling height of the species. The high heritability for seed weight (0.99), length (0.99), and width (0.97), and germination percentage (0.99) indicated that selection and genetic gain for these traits would be effective during the commencement of improvement program. Trait association analysis explained that higher seed weight significantly reduced sapling height, collar diameter, number of leaves per plant, internodal length, petiole length, and germination percentage (r = −0.86; p < 0.001) that ultimately reduced the seedling vigor in Melia dubia . Interestingly, the number of branches per plant were not associated with any of the morphological traits. The first principal component explained 50.09% of the entire variation and all the traits contributed greatly to the variation for this principal component, except for number of branches, leaf width and seed length. The clustering approach assorted geographic variation of M. dubia populations into three main sub-clusters i.e. South, North, and North East populations each consisting of five, seven and one populations (including cultivar), respectively. Among different ecotypes, Bahumukhi, Varsha and US Nagar seed sources outperformed all others in seedling vigour (sapling height) and rest of the growth parameters. Overall, findings explained that considerable scope exists for the development of superior planting material of M. dubia through exploration of seeds and selection at the early seedling stage.

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Influence of gibberellic acid and temperature on seed germination in Chilgoza pine (Pinus gerardiana Wall.)

Cited by 17 publications

References 9 publications

Review on regeneration status of Betulautilis D. Don: A critically endangered multipurpose timber line species in Indian Himalayan region

Review on regeneration status of Betulautilis D. Don: A critically endangered multipurpose timber line species in Indian Himalayan region

Genetic diversity and morphological variation of Pinus gerardiana along the environmental gradient from Zhob, Balochistan, Pakistan

Seed and seedling diversity delimitation and differentiation of Indian populations of Melia dubia cav.

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