<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Meiotic studies were carried out in nine different accessions of T. undulata collected from three districts of Rajasthan, India. Data collected on chromosome associations, chiasma frequency and their distribution pattern concluded that the somatic chromosome number of T. undulata is 2n = 2x = 36 which is at variance with published literature. The high frequency of 18:18 chromosome distribution at anaphase I and an overwhelming percentage of stainable pollens observed are indicative of overall genomic stability as supported by complete absence of accessory chromosomes (B) and supernumerary nucleoli. Numerical alteration of chromosomes might have played an important role in origin and adaptation of T. undulata to the adverse climate conditions of Indian desert.</p></abstract>

Meiotic studies were carried out in nine different accessions of T. undulata collected from three districts of Rajasthan, India. Data collected on chromosome associations, chiasma frequency and their distribution pattern concluded that the somatic chromosome number of T. undulata is 2n = 2x = 36 which is at variance with published literature. The high frequency of 18:18 chromosome distribution at anaphase I and an overwhelming percentage of stainable pollens observed are indicative of overall genomic stability as supported by complete absence of accessory chromosomes (B) and supernumerary nucleoli. Numerical alteration of chromosomes might have played an important role in origin and adaptation of T. undulata to the adverse climate conditions of Indian desert.

Comparative Meiotic Chromosome Studies in Nine Accessions of Tecomella undulata (Sm.) Seem., Threatened Tree of Indian Desert

Silvae Genetica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Meiotic studies were carried out in nine different accessions of T. undulata collected from three districts of Rajasthan, India. Data collected on chromosome...

Comparative Meiotic Chromosome Studies in Nine Accessions of Tecomella undulata (Sm.) Seem., Threatened Tree of Indian Desert

Pubblicato online: 14 ott 2017

Pagine: 301 - 306

Ricevuto: 16 feb 2006

DOI: https://doi.org/10.1515/sg-2008-0045

Parole chiave
genetic variation, meiotic studies, threatened tree, Tecomella undulata, Bignoniaceae

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Comparative Meiotic Chromosome Studies in Nine Accessions of Tecomella undulata (Sm.) Seem., Threatened Tree of Indian Desert

Pubblicato online: 14 ott 2017

Pagine: 301 - 306

Ricevuto: 16 feb 2006

DOI: https://doi.org/10.1515/sg-2008-0045

Parole chiavegenetic variation, meiotic studies, threatened tree, Tecomella undulata, Bignoniaceae

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Parole chiave
genetic variation, meiotic studies, threatened tree, Tecomella undulata, Bignoniaceae