31 research outputs found
Flower opening time of Photoperiod Sensitive and Photoperiod Insensitive Rices on Sunny Days
No full textThis is the First Record of Flower Opening Time on Sunny Days of Photoperiod Sensitive and Photoperiod Insensitive Rices in Different Years (2020-2022
Replication Data for: Wood and bark lignin contents of trees from deciduous forests of eastern India
No full textWe present here the first estimation of lignin content in wood and bark of 48 species from tropical deciduous forests of India
Photoperiod Sensitivity Index Calculation from Sowing and Flowering Dates
No full textCalculation of Deb's Index of photoperiod sensitivity from dates of sowing and anthesis of 81 rice landraces cultivated in short-day season and 13 landraces cultivated in long-day season in different years
Rice flower opening time and flower opening duration data
No full textThis is the first comprehensive data of flower opening time and duration of flower opening in 1114 indigenous rice landraces from South and Southeast Asia, and day temperature records on respective flowering dates
A Farmer’s Approach to Detecting Photoperiod Sensitivity in Rice (Oryza sativa ssp. indica) Landraces
No full textMost indigenous rice landraces are sensitive to photoperiod during short day seasons, and this sensitivity is more pronounced in indica than in japonica landraces. Attempts to identify photoperiod sensitive (PPS) cultivars based on the life history stages of the rice plant, and several models and indices based on phenology and day length have not been precise, and in some cases yield counterfactual inferences. Following the empirical method of traditional Asian rice farmers, the author has developed a robust index, based on the sowing and flowering dates of a large number of landraces grown in different seasons from 2020 to 2023, to contradistinguish PPS from photoperiod insensitive cultivars. Unlike other indices and models of photoperiod sensitivity, the index does not require the presumed duration of different life history stages of the rice plant but relies only on the flowering dates and the number of days till flowering of a rice cultivar sown on different dates to consistently identify photoperiod sensitive cultivars
The Erosion of Biodiversity and Culture: Bankura District of West Bengal as an Illustrative Locale
No full textThe decimation of biodiversity at the species, genetic, and ecosystem levels as a direct consequence of the industrial resource use mode is well documented in human ecology and conservation literature. Not only wild biota but also domesticated crop landraces have been pushed to extinction by industrial land-use systems. The process of biodiversity erosion impinges on, and is augmented by, the decimation of local cultural elements, such as food cultures, the vocabularies of local languages, house architecture, and an inchoate appreciation of the non-use value of biodiversity, i.e., beyond its instrumental value. This process of biocultural erosion is evident in the district of Bankura, West Bengal, India, and this article collates evidence from over two decades of my research on the biodiversity and cultural elements of the region. The replacement of a traditional eco-centric ethic with an industrial ethic, and its consequent impacts on biodiversity and local cultural traditions in this region, is illustrative of the global process of biodiversity loss
Beyond Developmentality: Constructing Inclusive Freedom and Sustainability - By Debal Deb
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