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Moisture content and Germination per cent of Fraxinus xanthoxyloides seeds as affected by time of seed collection
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An experimental trial was conducted to study the effect of time of fruit collection on the germination of Fraxinus xanthoxyloides seeds-an important lesser known tree species of cold desert area. The seeds of Fraxinus xanthoxyloides th were collected on 15 days interval (Fortnightly basis) starting from 1st September, 2007 to 15 December, 2007 and...
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Citations
... Syn. F. moorcroftiana Brandis, commonly known as Afghan ash, is a traditional medicinal plant, found in trans-Indus regions, India, Pakistan, Algeria, Morocco, Afghanistan and Baluchistan (Anon, 1956;Negi and Sharma, 2015). It also occurs in the northern temperate regions of the world. ...
... It also occurs in the northern temperate regions of the world. In India, it is mostly occurs in the inner dry tracts of Western Himalayas especially in Kinnaur district of Himachal Pradesh and Chamoli district of Uttarakhand (Negi and Sharma, 2015;Kumar et al., 2016). It is a large deciduous shrub to medium sized tree up to 8m height and it occurs in tree form in its lower distribution range; however, it exists in shrubby form with the rise in altitude in interior parts of cold desert areas (Troup, 1921;Negi and Sharma, 2015). ...
... In India, it is mostly occurs in the inner dry tracts of Western Himalayas especially in Kinnaur district of Himachal Pradesh and Chamoli district of Uttarakhand (Negi and Sharma, 2015;Kumar et al., 2016). It is a large deciduous shrub to medium sized tree up to 8m height and it occurs in tree form in its lower distribution range; however, it exists in shrubby form with the rise in altitude in interior parts of cold desert areas (Troup, 1921;Negi and Sharma, 2015). The leaves are relatively small (7-15 cm) with a more or less winged leaf rachis. ...
... Syn. F. moorcroftiana Brandis, commonly known as Afghan ash, is a traditional medicinal plant, found in trans-Indus regions, India, Pakistan, Algeria, Morocco, Afghanistan and Baluchistan (Anon, 1956;Negi and Sharma, 2015). It also occurs in the northern temperate regions of the world. ...
... It also occurs in the northern temperate regions of the world. In India, it is mostly occurs in the inner dry tracts of Western Himalayas especially in Kinnaur district of Himachal Pradesh and Chamoli district of Uttarakhand (Negi and Sharma, 2015;Kumar et al., 2016). It is a large deciduous shrub to medium sized tree up to 8m height and it occurs in tree form in its lower distribution range; however, it exists in shrubby form with the rise in altitude in interior parts of cold desert areas (Troup, 1921;Negi and Sharma, 2015). ...
... In India, it is mostly occurs in the inner dry tracts of Western Himalayas especially in Kinnaur district of Himachal Pradesh and Chamoli district of Uttarakhand (Negi and Sharma, 2015;Kumar et al., 2016). It is a large deciduous shrub to medium sized tree up to 8m height and it occurs in tree form in its lower distribution range; however, it exists in shrubby form with the rise in altitude in interior parts of cold desert areas (Troup, 1921;Negi and Sharma, 2015). The leaves are relatively small (7-15 cm) with a more or less winged leaf rachis. ...
... Bhardwaj et al. (2002) correlated the fruit colour of Albizzia chinensis for standardization of its seed collection time and Singh et al. (2005) also correlated the fruit colour of Fraxinus micrantha for identification of optimum seed collection period. Negi and Sharma (2015) and Jeena et al. (2012) also correlated fruit and seed colour for determining the optimum time of seed collection in Fraxinus xanthoxyloides and Adina cordifolia. ...
The present study was conducted in West Himalayan Dry Juniper Forest, in Chamoli district, Uttarakhand and Dry Broadleaved and Coniferous Forest, Kinnaur district, Himachal Pradesh, India, to investigate the population structure and regeneration status of Afghan Ash tree species. The results of population status of the Afghan ash in Uttarakhand and Himachal Pradesh indicated the dominance of F. xanthoxyloides . In Uttarakhand, maximum IVI value of F. xanthoxyloides was recorded in Malari (170.26), followed by Jhelum (160.13), whereas in Himachal Pradesh, maximum IVI value 161.50 was recorded in Ribba, while, in Jhangi site 128.68 IVI value was recorded. Density and total basal area in all the sites of the Afghan ash ranged from 344.44 individuals ha − 1 to 482.22 individuals ha − 1 and 18.77 m ² ha − 1 to 35.65 m ² ha − 1 , respectively. The natural regeneration status of F. xanthoxyloides was found to be quite good in all the selected sites/ranges. The maximum number of seedlings were recorded from Himachal Pradesh with (837.78 individual’s ha − 1 ) in Jangi, while minimum number of seedlings per hectare (70.37 individual’s ha − 1 ) was recorded in Jhelum, Uttarakhand. The reverse J-shaped curve was observed in all the CBH classes which signify regeneration at the stand level was good and maximum portion of curve with more than one-half of the individual’s occurrence was found to be higher between the girth classes 10.1–20 cm to 20.1–30 cm and decreased with the increase of girth in all the study stands. Anthropogenic disturbances resulted to be declined in populations of Afghan ash and may lead this species to endangered, rare and threatened categories. Therefore, proper conservation and management initiatives with active involvement of local people are urgent need to protect this keystone plant species in their habitat particularly in cold desert regions of Western Himalayas.
