Navigation Links
Citrus indica Tanaka - a progenitor species of cultivated Citrus
Date:11/10/2011

A group of enthusiastic cytogeneticists (Marlykynti Hynniewta, Surendra Kumar Malik and Satyawada Rama Rao) from North Eastern Hill University show that C. indica occupies a special taxonomic position, as reflected in the karyomorphological data.

The genus Citrus is an economically important horticultural crop known for its fruit and juice. In India, there are about 30 species of Citrus of which at least nine species are available throughout India, while 17 species are confined to the North-Eastern states of India, which have been classified as a hot spot for Citrus biodiversity and are threatened in their natural habitat as per the criteria fixed by the International Union for Conservation of Nature and Natural Resources (IUCN). Seven Indian Citrus species are considered endangered or nearly so, including C. Indica, C. macroptera, C. latipes, C. assamensis, C. ichangensis, C. megaloxycarpa and C. rugulosa.

C. indica (Tanaka, 1937) is supposed to be the most primitive species and perhaps the progenitor of cultivated Citrus. From the karyomorphological data it can be observed that the asymmetry index of different species of Citrus presently investigated had shown significant variation. C. medica, C. grandis and C. reticulata which are considered as true basic species are characteristic in having low asymmetry index of 1.87, 1.89 and 2.46 respectively. In the present investigation, the data from the karyomorphological observations on chromosome complements in 10 different Citrus species reflect that C. indica with its intermediate asymmetry index value (1.94) may be regarded as a true progenitor of cultivated Citrus. This study also supports the previous report that there are three true species of Citrus, viz. C. grandis, C. reticulata and C. medica.


'/>"/>
Contact: Prof. S. Rama Rao
srrao22@yahoo.com
036-427-22404
Pensoft Publishers
Source:Eurekalert  

Page: 1

Related biology news :

1. Organic plant waste proves effective weed control for citrus trees
2. UC Riverside entomologist recognized for research in citrus entomology
3. Genomes of citrus canker pathogens decoded
4. Genetic origin of cultivated citrus determined
5. New findings provide cost, benefit data for Florida citrus industry
6. New citrus variety released by UC Riverside is very sweet, juicy and low-seeded
7. New study indicates link between weight gains during pregnancy and dieting history
8. Lichens function as indicators of nitrogen pollution in forests
9. New study indicates smallpox vaccination effective for decades
10. Genes for 9 health indicators
11. Abundance of ladybugs in olive orchards is an indicator of health and sustainability
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Citrus indica Tanaka - a progenitor species of cultivated Citrus
(Date:3/29/2016)... 2016 LegacyXChange, Inc. (OTC: ... SelectaDNA/CSI Protect are pleased to announce our successful effort ... variety of writing instruments, ensuring athletes signatures against counterfeiting ... from athletes on LegacyXChange will be assured of ongoing ... Bill Bollander , CEO states, "By ...
(Date:3/22/2016)... , March 22, 2016 ... research report "Electronic Sensors Market for Consumer Industry by ... & Others), Application (Communication & IT, Entertainment, ... - Global Forecast to 2022", published by ... is expected to reach USD 26.76 Billion ...
(Date:3/21/2016)... , March 22, 2016 ... with passcodes for superior security   ... leading provider of secure digital communications services, today announced ... technology and offer enterprise customers, particularly those in the ... recognition and voice authentication within a mobile app, alongside, ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... June 24, 2016 Epic Sciences unveiled ... cancers susceptible to PARP inhibitors by targeting homologous ... (CTCs). The new test has already been incorporated ... multiple cancer types. Over 230 clinical ... response pathways, including PARP, ATM, ATR, DNA-PK and ...
(Date:6/23/2016)... Mass. , June 23, 2016   ... development of novel compounds designed to target cancer ... napabucasin, has been granted Orphan Drug Designation from ... the treatment of gastric cancer, including gastroesophageal junction ... stemness inhibitor designed to inhibit cancer stemness pathways ...
(Date:6/23/2016)... -- The Prostate Cancer Foundation (PCF) is pleased to announce 24 new ... prostate cancer. Members of the Class of 2016 were selected from a pool ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... ... 23, 2016 , ... In a new case report published today in STEM ... who developed lymphedema after being treated for breast cancer benefitted from an injection of ... dealing with this debilitating, frequent side effect of cancer treatment. , Lymphedema ...
Breaking Biology Technology: