here - First Legume Society Conference (LSC1)

Book of Abstracts First Legume Society Conference 2013: A Legume Odyssey Novi Sad, Serbia, 9-11 May 2013
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Development of genotypes tolerant to heat stress and for photoperiod insensitivity in
Faba bean
Abou Khater Lynn 1 , Amri Ahmed 2 , Fouad Maalouf 2
1 Ecole Supérieure d’Ingénieur Agronomique Méditerranéenne-Saint Joseph University Zahle, Lebanon
2 International Center for Agricultural research in Dry Areas, Beirut, Lebanon
Faba bean was originated from the Middle East with the beginning to agriculture and distributed
worldwide making specific adaptation to different ecosystems with different temperatures. It is
cultivated worldwide in environments with temperatures varied from -15 to +37 degrees C
during cropping seasons. Due to climate change and temperature increases, the crop is frequently
exposed to higher temperature causing more heat and drought stresses. A set of 200 genotypes
representing different geographical regions were evaluated in ICARDA-Terbol (Lebanon) station
during the summer season for four consecutive years (2008-2011) under maximum temperature
varied from 37 to 42 degrees Celsius. Recurrent selection technique was applied to identify single
plants adapted to temperature above 37 during flowering and podding set with photoperiod
insensitivity. 470 single plant progenies were retested in augmented design with repetitive checks
in summer 2012 in Terbol-Lebanon. The lines were scored from 1 (healthy genotypes) to 9
(plants were killed). Data on days to flowering varied from 45 days to 60 days, days to maturity
from 119 to 130 days and 2 genotypes with high dormancy were germinated after 60 days of
planting. Our results indicate that 90 selected lines reached the maturity with good pod filling
with score from 1 to 3. The genotypes identified will be multiplied and send to NARS for testing
their adaptability to different heat prone areas.
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