KRISHI
ICAR RESEARCH DATA REPOSITORY FOR KNOWLEDGE MANAGEMENT
(An Institutional Publication and Data Inventory Repository)
"Not Available": Please do not remove the default option "Not Available" for the fields where metadata information is not available
"1001-01-01": Date not available or not applicable for filling metadata infromation
"1001-01-01": Date not available or not applicable for filling metadata infromation
Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/17027
Title: | Differences in in vitro pollen germination and pollen tube growth of coconut (Cocos nucifera L.) cultivars in response to high temperature stress. |
Other Titles: | Not Available |
Authors: | Hebbar KB, Helan MR, Anusree RN, Kannan S, Niral V, Arivalagan M, Gupta A, Samsudeen K, Chandran KP, Chowdappa P, and Vara Prasad P.V. |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Central Plantation Crops Research Institute |
Published/ Complete Date: | 2018-04-01 |
Project Code: | Not Available |
Keywords: | Pollen Germination |
Publisher: | Elsevier |
Citation: | Hebbar KB, Helan MR, Anusree RN, Kannan S, Niral V, Arivalagan M, Gupta A, Samsudeen K, Chandran KP, Chowdappa P, and Vara Prasad P.V. (2018). Differences in in vitro pollen germination and pollen tube growth of coconut (Cocos nucifera L.) cultivars in response to high temperature stress. Environmental and Experimental Botany, 153: 35–44. |
Series/Report no.: | Not Available; |
Abstract/Description: | Temperature is a primary factor affecting the rate of plant development. Warmer temperatures expected with climate change and the potential for more extreme temperature events will impact plant productivity. Pollination is one of the most sensitive phenological stages to temperature extremes and in this study an in vitro pollen germination technique is used to screen coconut genotypes tolerant to high temperature. The pollen of twelve coconut genotypes comprising five talls (CCNT, FMST, LCT, PHOT and WCT), five dwarfs (CGD, COD, CRD, GBGD and MYD) and two hybrids (COD X WCT and MYD X WCT) were screened at different temperature levels from 10 to 50 °C at an interval of 2.5 °C. Cultivar variation existed for cardinal temperatures (Tmin, Topt and Tmax) of pollen germination percentage and pollen tube growth. Mean cardinal temperatures calculated from the bilinear model for the 12 genotypes ranged from 23.5 °C to 29.5 °C, 9.7 °C to 16.5 °C and 40.1 °C to 43.9 °C for Topt, Tmin and Tmax, respectively. In general tall, cultivars FMST, LCT, WCT, dwarf cultivar COD and hybrids showed better adaptability to high temperature while dwarf MYD was the least adaptable. At the metabolic level, high temperatures induced about 20% reduction in soluble protein content compared to optimal temperature in all the studied genotypes. There was an inverse relationship between superoxide dismutase activity and pollen germination percentage. Overall, there was wide variation in coconut cultivars for cardinal temperatures (Tmin, Topt and Tmax) of pollen germination percentage and pollen tube growth. The genotypes with higher Tmax for pollen germination and tube growth may be more tolerant to high temperature stress during flowering. Further studies are required to validate the results under in vivo condition; and also to understand the mechanism and factors that lead to pollen sterility in coconut. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Journal |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Environmental and Experimental Botany |
NAAS Rating: | 10.03 |
Volume No.: | 153 |
Page Number: | 35–44 |
Name of the Division/Regional Station: | Division of Physiology, Biochemistry and Post-Harvest Technology |
Source, DOI or any other URL: | 10.1016/j.envexpbot.2018.04.014 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/17027 |
Appears in Collections: | HS-IIHR-Publication |
Files in This Item:
There are no files associated with this item.
Items in KRISHI are protected by copyright, with all rights reserved, unless otherwise indicated.