We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Phenotypic and molecular characterization of rice germplasm lines and identification of novel source for low soil phosphorus tolerance in rice.
- Authors
Swamy, H. K. Mahadeva; Anila, M.; Kale, Ravindra R.; Bhadana, V. P.; Anantha, M. S.; Brajendra, P.; Hajira, S. K.; Balachiranjeevi, C. H.; Prasanna, B. Laxmi; Pranathi, K.; Dilip, T.; Bhaskar, S.; Kumar, V. Abhilash; Kousik, M. B. V. N.; Harika, G.; Swapnil, K.; Rekha, G.; Cheralu, C.; Shankar, V. Gouri; Reddy, S. Narendra
- Abstract
Phosphorus (P) is an essential macro-nutrient required for growth and development of all crop plants including rice. Low availability of P in the soils manifests in terms of impeding crop growth leading to yield losses in rice. Adequate genetic variability for low soil P tolerance and also P use efficiency has been documented in rice and a major QTL called Pup1, conferring tolerance to low soil P has been identified, characterized and cloned from an Indian landrace, Kasalath. In the present study, a set of 98 germplasm lines collected from North-Eastern part of India were characterized for low soil P tolerance by screening them in a plot with low soil P (with available P < 2.0 kg ha−1) and also a plot with normal soil P (available P > 20 kg ha−1). The rice lines showed significantly high genetic variability for low soil P tolerance associated traits. Stress indices were estimated based on yield under normal and low soil P conditions and cluster analysis based on the stress indices; yield under normal and low soil P condition grouped the genotypes into highly tolerant, tolerant and sensitive to low soil P. Among the rice lines, 18 showed tolerance to low soil P (i.e. yield reduction < 70% in low soil P condition). The genotypic analysis based on Pup1 associated molecular markers revealed the presence of complete or partial Pup1 genomic region in most of the germplasm lines. Interestingly, a landrace called Wazuhophek was observed to be completely devoid of Pup1 and hence it can serve as novel source for low P tolerance.
- Subjects
INDIA; PHOSPHORUS in soils; PLANT-water relationships; RICE; CROPS; CROP growth
- Publication
Euphytica, 2019, Vol 215, Issue 7, pN.PAG
- ISSN
0014-2336
- Publication type
Article
- DOI
10.1007/s10681-019-2443-0