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Raghavan, R. S.
- Morphological and Cytological Studies in the Genus Lantana L.
Authors
1 Central Botanical Laboratory, Botanical Survey of India, Allahabad, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 2, No 3-4 (1960), Pagination: 299-303Abstract
1. Chromosome numbers in L. wightiana and L. montevidensis have been recorded for the first time. These plants have a basic number of n = 12 which is the same for all the species studied so far except L. camara.
2. Of the plants studied, polyploid races were observed in L. camara var. mutabilis only. In this variety there is no correlation between flower colour and chromosome number. In nature tetraploids and to a lesser extent triploids are predominant.
3. Stomata are confined to lower epidermis only. The number of stomata per square millimetre varies at the species level, but is more or less constant in all the three varieties and polyploid races of L. camara. The diploid forms of all the three varieties of Lantana camara have smaller stomata when compared to the higher polyploids.
4. In all the plants studied, 4-8 microspores were found due to laggards forming small micro-nuclei.
5. In spite of a regular meiosis in L. camara var. nivea and Lantana montevidensis pollen grains were found to be completely sterile. Conversely, in spite of irregular meiosis in some of the triploids of var. mutabilis, pollen fertility was very high. In var. crocea partial sterility prevails, though meiosis is normal. Sterility in Lantana is not merely due to chromosomal aberrations but is also gene controlled.
6. Even completely male sterile species produced viable seeds. Preliminary studies seem to indicate the prevalence of apomixis in this genus.
Full Text
- A Note on Chilocarpus malabaricus Bedd. (Apocynaceae)
Authors
1 Botanical Survey of India, Western Circle, Poona, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 6, No 2-4 (1964), Pagination: 309-310Abstract
No Abstract.Full Text
- Poaceae of Karnataka State
Authors
1 Botanical Survey of India, Pune, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 18, No 1-4 (1976), Pagination: 109-143Abstract
The paper lists 364 species, and varieties belonging to 114 genera of family Poaceae occurring in the Karnataka State. The occurrence of the-taxa is indicated districtwise within the State. One species is reported as new distributional record for India and 26 species for the State.Full Text
- Floristic Studies in India-The Western Circle
Authors
1 Botanical Survey of India, Pune, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 19, No 1-4 (1977), Pagination: 95-108Abstract
No Abstract.Full Text
- Rediscovery of the Rare Grass Parahyparrhenia Bellariensis (Hack.) Clayton
Authors
1 Botanical Survey of India, Pune, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 20, No 1-4 (1978), Pagination: 149-150Abstract
No Abstract.Full Text
- Cassia uniflora Mill. (Caesalp1niaceae)-a New Record for India
Authors
1 Botanical Survey of India, Pune, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 22, No 1-4 (1980), Pagination: 225-225Abstract
No Abstract.Full Text
- Two New Species of Panicum L. from the Indian Subcontinent
Authors
1 Botanical Survey of India, Pune, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 24, No 1-4 (1982), Pagination: 145-147Abstract
Based on the collections housed in the herbarium of Botanical Survey of India, fine, two new species of Panicum L. are described, one from Sind (Pakistan) and the other from Karnataka (India).Full Text
- A Rare Species of Agapetes D. Don Ex G. Don (Ericaceae)
Authors
1 Botanical Survey of India, Howrah, IN
2 Botanical Survey of India, Pune, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 24, No 1-4 (1982), Pagination: 171-173Abstract
No Abstract.Full Text