A.N. Rao's scientific contributions

Publications (55)

Technical Report
Full-text available
DUS Test Guidelines in Mokara
Technical Report
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DUS Test Guidelines in Dendrobium orchids
Technical Report
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DUS Test Guidelines in Cattleya & Phalaenopsis orchids
Technical Report
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DUS Test Guidelines in Oncidium Orchids
Technical Report
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DUS Test Guidelines in Paphiopedilum orchids
Technical Report
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DUS Test Guidelines in Cymbidium orchids
Technical Report
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DUS Test Guidelines in Vanda orchids
Conference Paper
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Srivastava (2011). Characterization of commercial orchid species using DUS test guide lines. The orchids are one of the distinctive plants of nature and highly priced in the international flower trade due to their incredible range of diversity in size, colour, shape, forms, appearance and long lasting qualities of flowers. They are considered as hi...
Conference Paper
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DUS testing on commercial orchids (Abs No. I-13). According to UPOV Convention 1961, DUS testing is essential to provide and promote an effective system of plant variety protection, with the aim of encouraging the development of new varieties of plants and for the benefit of society. It provides rights for breeders to exploit or develop new plant v...
Conference Paper
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The species of Paphiopedilum, are commonly called as 'Lady's or Venus's Slipper' orchids. The plants are characterized by their luxuriant and multicoloured flowers with shoe-shaped labellum or synsepalum, a structure unique to orchids that is formed by the fusion of two lateral sepals. The flowers have long vase life, and they remain on the plant m...
Conference Paper
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DUS test guidelines in Phalaenopsis orchids
Conference Paper
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DUS Testing guidelines for cut flower orchids
Experiment Findings
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Technology for commercialization
Chapter
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Floriculture has emerged as an immense entrepreneurial opportunity for small and marginal farmers and a way forward to earn foreign exchange. Floriculture business deals with cut flowers, pot plants, cut foliages, seeds, bulbs, tubers, rooted cuttings and dried flowers or leaves. Major floricultural crops traded internationally include
Chapter
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Orchids are one of the most distinctive plants of nature and highly priced in the international flower trade due to their incredible range of diversity in size, colour, shape, forms, appearance and long lasting qualities of flowers. They are considered to be highly valued cut flowers as well as potted plants. Out of 1331 species of orchids of India...
Chapter
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The valuable orchid genera that are highly priced in the international flower trade due to their incredible range of diversity in size, colour, shape, forms, appearance and long post-harvest life of flowers include Cymbidium, Cattleya, Dendrobium, Phalaen-opsis, Vanda and Paphiopedilum. Post-harvest life of orchid cut flowers is influenced by pre-h...
Chapter
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The lack of quality planting materials has become a major factor for limiting commercial cultivation of various orchids. There are six main techniques used for orchid propagation: division, Backbulbs, aerial cuttings, keiki, micropropagation and seed culture. Other techniques used in propagation are aerial shoots and tubers (Bhat-tacharjee and De,...
Article
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Attached with the document
Article
Full-text available
The species of Paphiopedilum, are commonly called as 'Lady's or Venus's Slipper' orchids. The plants are characterized by their luxuriant and multicoloured flowers with shoe-shaped labellum or synsepalum, a structure unique to orchids that is formed by the fusion of two lateral sepals. The flowers have long vase life, and they remain on the plant m...
Article
Full-text available
Dendrobium consists of 1600 species of sympodial epiphytic orchids. The genera are characterized by long pseudobulbs or canes with soft leaves on entire length or in some species, pseudobulbs are short or swollen terminating in two coriaceous leaves. The inflorescences are terminal or subterminal and arranged with one to several dozens of flowers w...
Article
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In the present study, 41 hybrids of Cymbidium, 14 hybrids of Dendrobium, 9 hybrids of Vanda were included for development pf DUS Test Guidelines using common descriptors.
Article
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There are about 25,000 species of orchids estimated to occur in the world. In India, about 1350 species belonging to 186 genera represent approximately 5.98% of of the flowering plants in India. The Eastern Himalayas and No Peninsular India species like tessellate reported to contain alkaloids, triterpen medicinal plants, is a vital part of Ayurved...
Chapter
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Northeast India, a mega-diversity centre and a hotspot, comprises eight states, viz., Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim and Tripura. It occupies 7.7 % of India’s total geographical area supporting 50 % of the flora (ca. 8000 species), of which 31.58 % (ca. 2526 species) are endemic. The region is rich in orchid...
Article
Full-text available
According to UPOV Convention 1961, Distinctiveness, Uniformity and Stability (DUS) testing is essential to provide and promote an effective system of plant variety protection, with the aim of encouraging the development of new varieties of plants and for the benefit of society. It provides rights for breeders to exploit or develop new plant varieti...
Article
Full-text available
According to UPOV Convention 1961, Distinctiveness, Uniformity and Stability (DUS) testing is essential to provide and promote an effective system of plant variety protection, with the aim of encouraging the development of new varieties of plants and for the benefit of society. It provides rights for breeders and farmers to exploit or develop new p...
Article
Full-text available
Distinctiveness, Uniformity and Stability (DUS) testing provides rights for breeders to exploit or develop new plant varieties, to allow access to foreign varieties with widen gene pool, to promote intensive breeding activities and to prevent unauthorized varieties exploitations. In the present investigation, 41, 14, 11, 9, 50 and 40 hybrids of Cym...
Article
Full-text available
Vanda consists of more than 70 species of monopodial epiphytic orchids distributed in India, China, The Hima-layas, Sri Lanka, Philippines and throughout South East Asia. These commercial orchids are grown in Thailand, Singapore, Malayasia and Hawai. All orchids having the same characteristics as the Vanda genus is called as a vandaceous orchid and...
Book
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Orchids account for a large share of global floriculture trade both as cut flowers and as potted plants, and are estimated to comprise around 10% of international fresh cut flower trade. The average value of fresh cut orchids and buds trade during 2007-2012 was US$ 483 million. In 2012, there are more than 40 countries exporting orchids and 60 coun...
Article
Full-text available
According to UPOV Convention 1961, DUS (Distinctiveness, Uniformity and Stability) testing is useful system for protection of varieties, for evolving of new genotypes of plants and for the utility of breeders and farmers. It provides rights for breeders and farmers to exploit or develop new plant varieties, to allow access to foreign varieties with...
Article
Full-text available
Cymbidiums comprising of 70 species are among the most popular winter and spring blooming semi-terrestrial orchids originated from tropical and subtropical Asia covering North Eastern India, China, Japan, Malayasia, the Philippines, Borneo islands and North Australia, usually growing in cooler climates at high elevations. Cymbidiums are famous for...
Article
Full-text available
DUS Test Guidelines in Oncidium orchids According to UPOV Convention 1961, DUS (Distinctiveness, Uniformity and Stability) testing is useful system for protection of varieties, for evolving of new genotypes of plants and for the utility of breeders and farmers. It provides rights for breeders and farmers to exploit or develop new plant varieties, t...

Citations

... It has S-shaped petals with undulate margins and the staminate, which is three-toothed at the apex, with the central tooth protruding [10]. The length of the flower measures between 5 to 10 cm, and it has a width of more than 8 cm [12]. Mature individuals produce one or more peduncles, and each peduncle ends in a solitary flower [13]. ...
... Wilting is the most common symptom of cut flower senescence which resulted loss of turgor pressure of the cells due to failure of water uptake. The failure in water uptake can be occurred owing to the stem blockage by air, microbial growth or physiological plugging (Lakshman et al., 2014). Moreover, the chlorophyll and other flower pigments i.e., anthocyanins, carotenoids, and betalains degradation caused the colour fading and discoloration (Rani and Singh, 2014). ...
... He further opined that most locally produced abrasives are not acceptable in the market because they have bad odour, poor mixtures of colour and cheap materials which leads to poor quality of the product. The finding is also in line with the Asaiabka (2008) [4] who noted commercially marketed abrasives have good fragrance, colour and of better than quality than locally produced households cleaners. ...
... The choice of a suitable substrate with high aeration, permeability, and an appropriate acidity grade is a prerequisite for ensuring autotrophic growth [40]. The most used substrates for the adaptation of orchids consist of bricks or charcoal, clay tiles, bark, coconut fibers, sawdust, perlite, vermiculite, peat, or sphagnum moss in different ratios [41,42,43]. This is consistent with our results, where the seedlings were adapted successfully in a substrate containing bark, perlite, and peat in the ratio of 1:1:1, respectively. ...
... The decrease in the duration of the breeding cycle and hybrid innovations hold the key to efficient propagation . For the breeding of ornamental plants, mutational breeding (natural and artificial) is a method of choice owing to the high mutation rate, improved traits, and reduced breeding cycle (Toker et al., 2007) and employed for orchids with novel phenotypes, bioactive constituents, disease resistance, and adaptation (De Chandra et al., 2019). For mutational breeding, the most frequently employed method is polyploidization, and it is successfully applied to many species, namely Oncidium (Cui et al., 2010), Dendrobium , and Cymbidium sp. ...
... Growing orchids for flowers and decoration is an ever-growing multimillion business worldwide (Chandra De et al., 2015;Lepcha et al., 2020). Orchids are often thought as a symbol of beauty, elegance, love and hospitality. ...
... Although polyploidization in response to hybridization has already been reported in orchids [33], this is not the case of natural polyploid plants from Brassolaeliocattleya, since flow cytometry of non-treated progenies showed intermediary nuclear DNA content between two parents. The hypothesis of endopolyploid cells inside protocorms that resulted in natural polyploid plants is strengthened by flow cytometry analysis that showed a high number of endopolyploid cells in tissues of protocorms of the studied hybrid. ...
... The leaves are green, succulent, and sometimes fall. Subterminal or terminal inflorescences with flowers are usually small but attractive (De et al. 2015). Species of the genus Dendrobium found in this study reached 33 species, two of which are natural hybrids, namely D. antennatum x D. discolor and D. trilamellatum x D. canaliculatum. ...
... Las flores son carnosas, de textura pesada, duraderas y poder haber de pocas a muchas por planta. El tamaño de la flor varía de 2,5 a 10 cm y presentan colores como amarillo, marrón, morado, magenta, azul y lavanda (De et al., 2015). ...
... About 80 Asian tropical species of the genus Paphiopedilum are distributed in Asia to South East Asia to New Guinea, and in the Pacific Islands (Chochai, 2014;Yap, 2016;De et al., 2019). Among the 9 Paphiopedilum in India, 8 are found in the North-eastern region (Joy, 1996;Singh et al., 2019). ...