Sarla Neelamraju
Directorate of Rice Research, Hyderabad, India
B.P. Mallikarjuna Swamy
Directorate of Rice Research, Hyderabad, India
K. Kaladhar
Directorate of Rice Research, Hyderabad, India
K. Anuradha
Directorate of Rice Research, Hyderabad, India
Y. Venkateshwar Rao
Directorate of Rice Research, Hyderabad, India
Anil K Batchu
Directorate of Rice Research, Hyderabad, India
Surekha Agarwa
Directorate of Rice Research, Hyderabad, India
A.P. Babu
Directorate of Rice Research, Hyderabad, India
T. Sudhakar
Directorate of Rice Research, Hyderabad, India
K. Sreenu
Directorate of Rice Research, Hyderabad, India
T. Longvah
National Institute of Nutrition, Hyderabad, India
K. Surekha
Directorate of Rice Research, Hyderabad, India
K.V. Rao
Directorate of Rice Research, Hyderabad, India
G. Ashoka Reddy
Directorate of Rice Research, Hyderabad, India
T.V. Roja
Acharya NG Ranga Agriculture University, Hyderabad, India
S.L. Kiranmayi
Acharya NG Ranga Agriculture University, Hyderabad, India
K. Radhika
Acharya NG Ranga Agriculture University, Hyderabad, India
K. Manorama
Acharya NG Ranga Agriculture University, Hyderabad, India
C. Cheralu
Acharya NG Ranga Agriculture University, Hyderabad, India
B.C. Viraktamath
Directorate of Rice Research, Hyderabad, India
Keywords
rice, biofortification, iron, zinc, quantitative trait loci, candidate genes, non-transgenic
Abstract
Large genetic variation exists for grain iron and zinc in rice germplasm including wild species and deep water rices. Conventional breeding is an easy and acceptable approach to biofortify rice. Analysis of 126 rice accessions using atomic absorption spectrophotometry showed that Fe concentration in brown rice ranged from 6 ppm in Athira to 72 ppm in O. nivara and Zn concentration from 27 ppm in Jyothi to 67 ppm in O. rufipogon. Quantitative trait loci (QTL) for high Fe and Zn concentration in grains were mapped from 3 wild progenitors and 2 deep water rices with the aim of gene discovery and also to develop iron/zinc-rich lines of two widely grown, popular rice varieties Swarna (MTU7029) and Samba Mahsuri (BPT5204) through conventional breeding approaches
Abstract
References
Swamy B.P.M., Kaladhar K., Anuradha K., Batchu A.K., Longvah T., Viraktamath B.C., Sarla N. (2011) Enhancing iron and zinc concentration in rice grains using wild species. ADNAT Convention and International Symposium on Genomics and Biodiversity, CCMB, Hyderabad 23–25 Feb 2011, Abstracts p. 71.
Financial support from Indian Council of Agricultural Research, Network project on Functional genomics of crops (NPTC/FG/05/2672/33-3019)and Department of Biotechnology, Govt of India (BT/AB/FG-2(PH-II)/2009) to SN and CSIR-UGC fellowship to BPMS is gratefully acknowledged.
