Abstract
Changes in the anatomical structure of peanut roots due to early season drought will likely affect the water acquiring capacity of the root system. Yet, as important as these changes are likely to be in conferring drought resistance, they have not been thoroughly investigated. The objective of this study was to investigate the effects of different durations of drought on the root anatomy of peanut in response to early season drought. Plants of peanut genotype ICGV 98305 were grown in rhizoboxes with an internal dimension of 50 cm in width, 10 cm in thickness and 120 cm in height. Fourteen days after emergence, water was withheld for periods of 0, 7, 14 or 21 days. After these drought periods, the first and second order roots from 0–20 cm below soil surface were sampled for anatomical observation. The mean xylem vessel diameter of first- order lateral roots was higher than that of second- order lateral roots. Under early season drought stress root anatomy changes were more pronounced in the longer drought period treatments. Twenty-one days after imposing water stress, the drought treatment and irrigated treatment were clearly different in diameter, number and area of xylem vessels of first- and second-order lateral roots. Plants under drought conditions had a smaller diameter and area of xylem vessels than did the plants under irrigated control. The ability of plants to change root anatomy likely improves water uptake and transport and this may be an important mechanism for drought tolerance. The information will be useful for the selection of drought durations for evaluation of root anatomy related to drought resistance and the selection of key traits for drought resistance.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
First-order lateral roots had larger mean xylem vessel diameter than second-order roots.
- Taxon
- Peanut
Arachis hypogaeat0 - Organ / stage
- first- order lateral rootse0
- Outcome
- mean xylem vessel diametere0
- Direction
- highere0
- Comparator
- second- order lateral rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean xylem vessel diameter of first- order lateral roots was higher than that of second- order lateral roots”
t0“Peanut”
Claim · model-written summary
Longer early season drought treatments produced more pronounced root anatomical changes.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- longer drought period treatmentse0
- Outcome
- root anatomy changese0
- Direction
- more pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under early season drought stress root anatomy changes were more pronounced in the longer drought period treatments”
t0“Peanut”
Claim · model-written summary
After 21 days, drought and irrigation differed in xylem vessel diameter, number, and area.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- drought treatmente0
- Outcome
- diameter, number and area of xylem vesselse0
- Qualifier
- Twenty-one days after imposing water stresse0
- Comparator
- irrigated treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twenty-one days after imposing water stress, the drought treatment and irrigated treatment were clearly different in diameter, number and area of xylem vessels of first- and second-order lateral roots”
t0“Peanut”
Claim · model-written summary
Drought reduced xylem vessel diameter and area relative to irrigated controls.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- drought conditionse0
- Outcome
- diameter and area of xylem vesselse0
- Direction
- smallere0
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants under drought conditions had a smaller diameter and area of xylem vessels than did the plants under irrigated control”
t0“Peanut”
Claim · model-written summary
Authors suggest root anatomical plasticity improves water uptake and transport.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- water uptake and transporte0
- Qualifier
- change root anatomye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ability of plants to change root anatomy likely improves water uptake and transport”
t0“Peanut”
The same questions in other papers
drought · growth · Arachis hypogaea (peanut)Results differ
37 papers in the same direction as this paper · 20 in the opposite direction
- positive
- positive
- positive
54 papers more in this group
See all 58 papers →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.