Cytological studies in some plants from cold deserts of India, Lahaul and Spiti (Himachal Pradesh)
スポンサーリンク
概要
- 論文の詳細を見る
Detailed meiotic course and pollen fertility studies have been carried out in 23 species belonging to 14 families from the Indian cold deserts of Lahaul-Spiti. Out of these, new chromosome counts have been made in the three species, <I>Chrysanthemum pyrethroides</I> (2n=3x=27, 2n=4x=36), <I>Waldhemia stoliczkai</I> (n=9) and <I>W. tomentosa</I> (n=9). Meiotic course is abnormal in both the triploid and tetraploid cytotypes of <I>C. pyrethroides</I> which include univalents at metaphase, late disjunction of bivalents, formation of restitution nuclei at anaphase-I and chromatin bridges. Subsequently, microsporogenesis is also abnormal and is characterized by the occurrence of high frequency of monads, diads, triads, polyads, and micronuclei. These meiotic irregularities lead to high pollen sterility in both the cytotypes. Six species, <I>Aquilegia fragrans</I> (n=7), <I>Astragalus bicuspis</I> (n=8), <I>Cicer microphyllum</I> (n=8), <I>Bergenia stracheyi</I> (n=17), <I>Sedum ewersii</I> (n=11), <I>Datisca cannabina</I> (n=11) and <I>Silene vulgaris</I> (n=12) are worked out chromosomally for the first time from India. An additional/varied intraspecific aneuploid cytotype has been recorded in <I>Hypericum elodeoides</I> (n=9) against the earlier report of 2n=16 from other parts of India and elsewhere. The phenomenon of cytomixis involving inter PMC migration of chromatin material has been recorded in <I>Anemone rivularis</I> (n=8), <I>Caltha palustris</I> (n=16), <I>Meconopsis aculeata</I> (n=28) and <I>Potentilla fruticosa</I> var. <I>rigida</I> (n=7). Cytomixis in <I>Anemone rivularis</I> (n=8) and <I>Caltha palustris</I> (n=16) resulted into high percentage of pollen malformation and heterogenous sized fertile pollen grains. In the remaining species, the meiosis is perfectly normal leading to very high pollen fertility. Our counts for rest of the species substantiate the previous chromosome reports by other workers.
- 国際染色体植物学会の論文
著者
-
Kumar Puneet
Department Of Botany Punjabi University
-
Gupta Raghbir
Department Of Botany ; Punjabi University
-
Gupta Raghbir
Department of Botany, Punjabi University,
-
Dhaliwal Rajdeep
Department of Botany, Punjabi University,
関連論文
- Aberrant Male Meiosis, Pollen Sterility and Variable Sized Pollen Grains in Clematis montana Buch.-Ham. ex DC. from Dalhousie hills, Himachal Pradesh
- Chromatin Transfer during Male Meiosis Resulted into Heterogeneous Sized Pollen Grains in Anemone rivularis Buch.-Ham. ex DC. from Indian Cold Deserts
- Meiotic Studies in Species from the Cold Deserts of Lahaul-Spiti and Adjoining Areas (Northwest Himalaya)
- Effect of Cytomixis on the Pollen Size in 'Seabuckthorn' : Hippophae rhamnoides L., Elaeagnaceae
- Cytomixis Induced Meiotic Abnormalities in Pollen Mother Cells of Clematis flammula L. (Ranunculaceae)
- Cytology of Caltha palustris L. (Ranunculaceae) from Cold Regions of Western Himalayas
- Meiotic Studies in Poa annua L. from Different Altitudinal Ranges to North India
- Male Meiotic Studies in Some Plants of Polypetalae from Dalhousie Hills (Himachal Pradesh)
- Cytological studies on the Monochlamydeae from North India
- Cytological Studies in Some Members of Tribe Senecioneae (Asteraceae) from North and Central India
- Exploration of Intraspecific Cytomorphological Diversity in Agrimonia eupatoria L. (Rosaceae) from Western Himalayas, India
- Cytomorphological Diversity in Some Species of Impatiens Linn. (Balsaminaceae) from Western Himalayas (India)
- Male Meiosis, Microsporogenesis and Pollen Grain Study in Inula cuspidata C. B. Clarke (Asteraceae)
- Impact of Chromatin Transfer and Spindle Abnormalities on Pollen Fertility and Pollen Size in Plantago lanceolata L.
- A Case of Synaptic Mutant in Erigeron karvinskianus DC. (Latin American Fleabane)
- Effect of secondary associations on meiosis, pollen fertility and pollen size in cape gooseberry (Physalis peruviana L.)
- Evaluation of Cytomorphological Diversity in Filipendula vestita (Wall. ex G. Don) Maxim., (Rosaceae) from Western Himalayas
- Meiotic Abnormalities in Populations of Heracleum lanatum Michx. : An Endemic and Threatened Medicinal Plant from Lahaul & Spiti Cold Desert Region of North Indian Higher Altitude Himalayas
- Cytomorphological Studies in Some Species of Setaria L. from Different Phytogeographical Parts of India
- Cytological Investigations on Some North Indian Bicarpellatae
- New chromosome number reports in some Polypetalous species from Kashmir Himalayas
- Meiotic Studies in Some Polypetalous Species from District Kangra (Himachal Pradesh), India
- Impact of Reciprocal Translocations and Non-Synchronous Disjunction of Chromosomes on Pollen Fertility in Astragalus chlorostachys from the Northwest Himalayas (India)
- Cytomorphological Studies on Some North Indian Members of the Family Verbenaceae
- Cytological investigations of some polypetalous plants from District Sirmaur of Himachal Pradesh in the Western Himalayas, India
- Effect of B-chromosomes on meiotic behaviour and genetic recombination in Artemisia nilagirica (C. B. Clarke) Pamp.
- Cytological studies in some plants from cold deserts of India, Lahaul and Spiti (Himachal Pradesh)
- Cytomorphological Studies in some species of Chrysanthemum L. (Asteraceae)
- High Pollen Sterility and 2n Pollen Grains in an Asynaptic 4x Cytotype (2n=48) of Solanum nigrum L.
- Cytological Studies of Some Dicots from the Hills of Mandi District (Himachal Pradesh) in Northwest Indian Himalayas