Impacts of water availability and plant density on morpho-physiological characteristics of fenugreek (Trigonella foenum-graecum)
Vaata/ Ava
Aasta
2022Autor
Hassanzadehdelouei, Mojtaba
Madani, Ahad
Bakhshi, Alireza
Metadata
Näita täielikku nimetuse kirjetKokkuvõte
Plant density and water availability are the most important
factors determining the yield of crops and medicinal plants. To investigate
the effect of these two factors and their interaction on the yield and
morpho-physiological characteristics of fenugreek, an experiment was
conducted in the form of split plots based on a randomized complete block
design (RCBD) with three replications in 2020. Water availability
(favourable conditions, mild stress and severe stress) were placed in main
plots and plant densities (22, 44 and 66 plants m2 –1
) were placed in subplots. The results showed a three-fold increase in plant density under optimal moisture conditions increased grain yield from 998 to 1 380 kg ha–1
and biological yield from 2 600 to 3 259 kg ha–1
, respectively, while in
mild and severe water stress, did not affect grain yield and biological yield.
In all three moisture conditions, a 3-fold increase in plant density reduced
the number of seeds per pod and a 2-fold increase in plant density reduced
the number of pods per plant. Although in some crops, the increase in
density under water stress conditions can compensate for the decrease in
yield, in fenugreek, the increase in density under water stress conditions
was not beneficial for the plant. Increasing the density to medium
(44 plants m2 –1
) reduces the source strength and applying high density
through sink restriction causes a decrease in yield. On the other hand,
moisture limitation by reducing the number of pods per plant, the number
of seeds per pod and the number of seeds per plant reduced the size of the
sink and the mass of 1 000 seeds, which indicates the strength of the
source, was not affected.