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Cytogenatic Analysis In Kacholam (Record no. 25369)

000 -LEADER
fixed length control field	02803nam a2200193Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field	OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20220205145822.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	140128s9999 xx 000 0 und d
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number	630.28
Item number	REK/CY
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name	Rekha K
245 ## - TITLE STATEMENT
Title	Cytogenatic Analysis In Kacholam
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc.	Vellanikkara
Name of publisher, distributor, etc.	Department of Agricultural Botany, College of Horticulture
Date of publication, distribution, etc.	1993
502 ## - DISSERTATION NOTE
Degree type	MSc
520 3# - SUMMARY, ETC.
Summary, etc.	The present study on cytogenetics of Kaempferia galanga L. in relation to seed set was undertaken at the Department of Agricultural Botany, College of Horticulture, Vellanikkara during the period 1991-93. A local selection ‘Vellanikkara’ grown under garden of AICRP on Medicinal and Aromatic Plants was used for the study. The major objectives were to confirm the existing reports on chromosome numbers, to determine the nature of pliody based on meiotic studies and to find out reasons for seedlessness in the crop in cytology and floral biology. The procedure for karyotype studies in Kaempferia was standardized. Pre-treatment of the roots in – bromonaphthalene for hours at 40C followed by fixation in Carnoy’s fluid for 24 hours and staining overnight in Snow’s carmine were effective in getting best cytological preparations. Mitotic studies revealed that this species is a polyploid and with all probability a pentaploid with 2n = 5x = 55. This somatic chromosome number is being reported for the first time in Kaempferia galanga L. The karyotype was found to be a symmetric one and belonged to ‘1a’ group of Stebbins (1958) classification. Meiotic studies revealed the presence of associations involving three, four, five and six chromosomes in addition to the bivalents and univalent. However, the number of multivalents were much less than expected and later meiotic abnormalities were rather almost absent. Pollen grains also exhibited reasonable fertility and viability. Based on both mitotic and meiotic studies it was indicated that Kaempferia galanga L. is a segmental allopolyploid with five sets of genomes designated as A1A2A2A2A2. Studies on floral morphology and artificial pollinations to induce seed set led to the conclusion that seedlessness in the crop is mainly due to the incompatibility factors in the style and stigma. The spiny stigma does not permit the proper adherence and germination of the pollen grains and the pollen tube growth attained was not sufficient to surpass the lengthy style and to reach the ovary. Attempts to induce seed set by hand pollination and stub pollination also failed.
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Viswanathan T V (Guide)
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	https://krishikosh.egranth.ac.in/handle/1/5810153417
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier	https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810153417&fileid=dfd4fc40-0f16-4a8f-9474-1e9c8bfcf3a0
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme
Koha item type	Theses

Holdings
Withdrawn status	Lost status	Source of classification or shelving scheme	Damaged status	Not for loan	Permanent Location	Current Location	Shelving location	Date acquired	Full call number	Barcode	Date last seen	Price effective from	Koha item type
					KAU Central Library, Thrissur	KAU Central Library, Thrissur	Theses	2014-03-18	630.28 REK/CY	170414	2014-03-18	2014-03-18	Theses

Kerala Agricultural University Central Library

Cytogenatic Analysis In Kacholam (Record no. 25369)