Chromosomal evolution in Balsaminaceae, with cytological observations on 45 species from Southeast Asia

Song, Yi; Yuan, Yong–Ming; Küpfer, Philippe

doi:10.1080/00087114.2003.10589359

Cited by 53 publications

(47 citation statements)

References 28 publications

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“…According to data compiled by Song et al (2003) it is obvious that polyploidy is quite low in this genus with tetraploid level being more common and further, polyploidy is restricted more to south Indian species than north Indian species. Earlier it was thought that the geographical distribution of the species with xϭ6 and 7 was largely confined to the Indian subcontinent, (Jones and Smith 1966).…”

Section: Discussionmentioning

confidence: 99%

“…The species with xϭ7 and xϭ10 grow sympatrically in various parts of India (Khoshoo 1957), otherwise species with xϭ6 and 7 are largely confined to the whole of the Indian subcontinent (Jones and Smith 1966). On the basis of an analysis of massive data, collected by Song et al (2003) for the genus, he has shown that the chromosome numbers 2nϭ12, 14, 15, 18, 19, 20, 28 and 36, based on xϭ6, 7, 9 and 10 are available in the Himalayas (including 2 zonesWestern Himalaya and Hills of North Eastern States) against the reports from South India (third zone) with the predominance of species based on xϭ7 and 10. The comparison is clear as that for both north and south Indian species, the common base numbers remained xϭ7 and 10 with a preponderance of third base number xϭ9 being related to north Indian species.…”

Section: Discussionmentioning

confidence: 99%

“…The genus Impatiens belongs to the family Balsaminaceae and occurs mostly in tropical and subtropical regions of the Old World (Grey-Wilson 1980) with limited number of species present in temperate parts of northern Asia, Europe and north America (Song et al 2003). It is represented by more than 1000 species on a worldwide basis (Clifton 2000).…”

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confidence: 99%

“…A perusal of literature shows that significant number of species of Impatiens have been worked out cytologically on a worldwide basis as evident from data compiled for 189 species by Song et al (2003). The different chromosome numbers reported in the genus are 2nϭ6, 8, 10, 12, 14, 15, 16, 17,18, 19, 20, 24, 26, 28, 30, 32, 34, 36, 40, 44, 48, 50, 56 and 66 (Song et al 2003).…”

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Cytomorphological Diversity in Some Species of Impatiens Linn. (Balsaminaceae) from Western Himalayas (India)

et al. 2010

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SummaryThe genus Impatiens Linn. belongs to the family Balsaminaceae and includes mostly wild as well as commonly cultivated ornamental plants. Nearly 91% of Indian species of Impatiens are reported to be endemic. To generate basic information on genetic diversity required for the improvement of germplasm, the present study has been carried out from the different selected parts of Western Himalayas such as Kashmir (J&K) and the Kangra and Sirmaur districts (H.P). During this study, 23 accessions belonging to 9 species of the genus Impatiens have been cytomorphologically observed. The species being cytologically worked out for the first time on a worldwide basis include 2 species as I.laxiflora (nϭ7, 8) and I. reidii (nϭ7). Six aneuploid cytotypes have been reported for the first time for the species I. arguta (nϭ7), I. bicornuta (nϭ7), I. brachycentra (nϭ8), I. glandulifera (nϭ6), I. scabrida (nϭ6) and I. sulcata (nϭ8) on a worldwide basis. The meiotic course in most of these accessions has been observed to be normal except for some of the accessions of I. brachycentra, I. glandulifera, I. scabrida and I. sulcata marked with abnormal meiosis. Out of 4 species (6 accessions) marked with cytomixis, in 2 accessions, one for each of I. scabrida and I. sulcata, the percentage of cytomixis has been seen to be relatively higher with production of heterogenous sized fertile pollen grains. The presence of B-chromosomes in I. balsamina is in conformity with the earlier reports for this species. Morphological comparison at intraspecific level has also been made for the different aneuploid cytotypes of I. brachycentra (nϭ7 and nϭ8), I. glandulifera (nϭ9 and nϭ6), I. laxiflora (nϭ7 and nϭ8) and I. scabrida (nϭ6 and nϭ7) highlighting the morphological changes coupled with chromosomal changes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Cytomorphological Diversity in Some Species of Impatiens Linn. (Balsaminaceae) from Western Himalayas (India)

et al. 2010

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“…Impatiens species, which are distributed mainly in tropical highlands and mountains in the Old World, and also in parts of temperate Asia and Europe (Song et al 2003;Cai et al 2008), have diverse reproductive characteristics and flower morphs (Yuan et al 2004). Previous studies have investigated the relationship between flower morph and pollen transfer in Impatiens species (Wilson 1995).…”

Section: Introductionmentioning

confidence: 99%

Pattern of flower size variation along an altitudinal gradient differs between Impatiens textori and Impatiens noli-tangere

Hattori

Nagano

Shinohara

et al. 2016

Journal of Plant Interactions

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Studies of factors influencing spatial variation in flower size offer insights into floral evolution. We investigated altitudinal variations in five flower dimensions of two native Japanese Impatiens species (I. textori and I. noli-tangere) and their interactions with their faunal visitors. These two species have similar floral traits, including flower shape, flowering time, and pollinator species; both species are pollinated mainly by Bombus diversus. In I. textori, all measured flower dimensions were negatively correlated with altitude. In contrast, in I. noli-tangere, no measured flower dimensions correlated with altitude. Thus, the altitudinal pattern of flower size variation differed between these congeneric co-habiting herbaceous plant species. The different patterns suggest that the factors (e.g. altitudinal variations of abiotic factors) that cause variation of flower size differ between these two Impatiens species even though focal species have similar floral traits (e.g. flower shape, flowering time, and pollinator species).ARTICLE HISTORY

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Pre‐ and postzygotic mechanisms preventing hybridization in co‐occurring species of theImpatiens purpureoviolaceacomplex

Abrahamczyk

Jandová

Líblová

et al. 2021

Ecology and Evolution

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Chromosomal evolution in Balsaminaceae, with cytological observations on 45 species from Southeast Asia

Cited by 53 publications

References 28 publications

Cytomorphological Diversity in Some Species of Impatiens Linn. (Balsaminaceae) from Western Himalayas (India)

Cytomorphological Diversity in Some Species of Impatiens Linn. (Balsaminaceae) from Western Himalayas (India)

Pattern of flower size variation along an altitudinal gradient differs between Impatiens textori and Impatiens noli-tangere

Pre‐ and postzygotic mechanisms preventing hybridization in co‐occurring species of theImpatiens purpureoviolaceacomplex

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