Abstract
Banana, one of the world's leading crops is predicted to be highly vulnerable to drought conditions brought about by climate change. Identification of drought tolerant cultivars is one of the long term strategies of addressing the effect of climate change. The National Plant Genetic Resources Laboratory and the Bureau of Plant Industry of the Philippine Department of Agriculture maintain germplasm collections of edible and wild Musa spp. from the Philippines, Southeast Asia and Papua New Guinea (SEA/PNG) that have not been assessed for drought tolerance. Thus, this study was conducted to assess the drought response of 29 Musa genotypes from the germplasm collections at seedling stage under greenhouse condition. Drought was imposed on 3 mo-old tissue culture-derived seedlings by withholding water for 2-3 wk, while control plants were watered regularly. Under drought condition, the genotypes differed significantly in terms of plant growth, number of leaf cigars formed, specific leaf area, biomass production and partitioning as well as water use efficiency across water treatment. Only 28% of the banana genotypes allocated more biomass to the roots. Total leaf area production was influenced by significant interaction between water treatment and genotype. Significant genotypic differences in terms of relative leaf folding (RLF) and stomata! conductance were observed, with increased RLF as soil moisture content decreased. Stomatal conductances were significantly affected by the interaction between genotype and time of sampling. The genotypes also differed significantly in their water use efficiency (WUE) with increases ranging 1-70% under drought. WUE was found to be positively correlated with total plant dry weight, root volume, root dry weight and relative leaf folding. Based on the relative performance under drought cultivar, "Gubao" (BBB) is the most drought tolerant based on total biomass production, root dry weight, root volume and WUE followed by 'P.K. Malaccacina" and "Tindok".
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Claims 11
Claim · model-written summary
Genotypes differed significantly across drought treatments in growth, leaf cigars and specific leaf area.
MusaNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under drought condition, the genotypes differed significantly in terms of plant growth, number of leaf cigars formed, specific leaf area”
t0“Musa spp.”
Claim · model-written summary
Genotypes differed significantly in biomass production, partitioning and water use efficiency.
- Treatment
- drought conditione0
- Outcome
- biomass production and partitioning as well as water use efficiencye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under drought condition, the genotypes differed significantly in terms of plant growth, number of leaf cigars formed, specific leaf area, biomass production and partitioning as well as water use efficiency across water treatment”
t0“Musa spp.”
Claim · model-written summary
Only 28% of banana genotypes allocated more biomass to roots.
Verbatim
e0“Only 28% of the banana genotypes allocated more biomass to the roots”
Claim · model-written summary
Total leaf area production showed significant water treatment by genotype interaction.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total leaf area production was influenced by significant interaction between water treatment and genotype”
t0“Musa spp.”
Claim · model-written summary
Relative leaf folding and stomatal conductance differed significantly among genotypes.
- Outcome
- relative leaf folding (RLF) and stomata! conductancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant genotypic differences in terms of relative leaf folding (RLF) and stomata! conductance were observed”
t0“Musa spp.”
Claim · model-written summary
Relative leaf folding increased as soil moisture decreased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased RLF as soil moisture content decreased”
e1“relative leaf folding (RLF)”
t0“Musa spp.”
Claim · model-written summary
Stomatal conductance depended significantly on genotype and sampling time interaction.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal conductances were significantly affected by the interaction between genotype and time of sampling”
t0“Musa spp.”
Claim · model-written summary
Water use efficiency differed significantly among genotypes and increased 1-70% under drought.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotypes also differed significantly in their water use efficiency (WUE) with increases ranging 1-70% under drought”
t0“Musa spp.”
Claim · model-written summary
Water use efficiency correlated positively with plant dry weight, root volume, root dry weight and relative leaf folding.
- Organ / stage
- roote0
- Outcome
- WUEe0
- Direction
- positively correlatede0
- Qualifier
- total plant dry weight, root volume, root dry weight and relative leaf foldinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WUE was found to be positively correlated with total plant dry weight, root volume, root dry weight and relative leaf folding”
e1“water use efficiency (WUE)”
t0“Musa spp.”
Claim · model-written summary
Gubao was the most drought tolerant based on biomass, roots and WUE.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“"Gubao" (BBB) is the most drought tolerant based on total biomass production, root dry weight, root volume and WUE”
t0“Musa spp.”
Claim · model-written summary
P.K. Malaccacina and Tindok followed Gubao in drought tolerance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by 'P.K. Malaccacina" and "Tindok"”
e1“most drought tolerant”
t0“Musa spp.”
The same questions in other papers
drought · physiology: water · MusaPositive and negative results
2 in the opposite direction
- negative
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.