Academia Journal of Agricultural Research 8(12):
368-374, December 2020
DOI: 10.15413/ajar.2020.0143
ISSN: 2315-7739
2020 Academia Publishing
Abstract
Genotypic evaluation of three rice (Oryza
sativa L.)
morphotypes of FARO 44 for drought and NPK
tolerance
Accepted 26th October, 2020
Yakubu. M. N1*., Okenwa, U. S2.,
Abdulhameed, A1., Muhammad. M1
1Department of Applied Ecology,
Abubakar Tafawa Balewa University, Bauchi,
Nigeria. 2Department of Biological Sciences,
Abubakar Tafawa Balewa University, Bauchi,
Nigeria.
Drought and decline in soil nutrients are two
major constrains limiting crop production
worldwide. Rice thrives better in a water
intensive environment and is therefore sensitive
to recurrent drought. Both drought and poor soil
nutrients are expected to be accelerated by
climate change. Pot experiment was conducted to
evaluate the growth and physiology of three FARO
44 morphotypes namely, FARO 44-drought, FARO
44-tall, and FARO 44-short for drought and NPK
resilience. The experimental design was three by
four factorial with rice genotypes; treatments:
water, irrigated and drought; NPK, 180 kg/ha,
and 90 kg/ha. The four different combinations,
irrigated full dose, irrigated half dose,
drought full dose, and drought half dose were
applied to the three phenotypes. The result of
the study revealed a high variation in drought
tolerance and NPK resilience among the FARO 44
phenotypes. FARO 44-drought showed greater
tolerance to drought compared to the rest of the
genotypes. While drought treatment reduced shoot
and root dry mass in FARO 44-tall and FARO
44-short, these traits were clearly increased in
FARO 44-drought. Drought effect tiller
production in all the tested genotypes. However,
the recommended dose of fertilizer (full dose,
180 kg/ha) induced more tillering and higher
root dry mass in FARO 44-drought. The general
impact of drought on the growth traits was less
in FARO 44-drought compared to FARO 44-tall and
FARRO 44-short. The outcome of this study
uncovers the ability of FARO 44-drought to
maintain higher shoot and root dry mass under
drought conditions. These desirable traits for
drought tolerance need to be exploited at
molecular level.
This is an open access article
published under the terms of the
Creative Commons Attribution
License, which permits unrestricted use, distribution, and
reproduction in any medium, provided the original work is
properly cited.
Cite this article as:
Yakubu MN, Okenwa US, Abdulhameed A, Muhammad M (2020).
Genotypic evaluation of three rice (Oryza
sativa L.)
morphotypes of FARO 44 for drought and NPK
tolerance. Acad. J. Agric. Res.
8(12): 368-374.
