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Mass increment over time in Crotalaria ochroleuca and Crotalaria spectabilis measured at 20-30 °C and a photoperiod of 8 h:16 h (light: dark). Bars represent standard deviation.
Source publication
The proper establishment of plants is essential for the efficient use of resources such as water and light. Besides, even after seed storage and sowing the uniform establishment of plants is essential for their success. Crotalaria ochroleuca and Crotalaria spectabilis are important medicinal plants with poor seed germination rate, occasionally. The...
Contexts in source publication
Context 1
... mass over time was recorded for both species seeds with a scale balance (precision: 0.001 g) and plotted as a mass increment curve. The fresh mass of the seed was recorded over time to plot fresh mass curves (Figure 1). After this, seed priming was undertaken for 18 h. ...
Context 2
... young plants observed at 21 DAS were analyzed in relation to their development potential, expressed as "normal seedlings" in terms of survival in optimum field conditions (Brasil, 2009). The root protrusion and germination index were calculated according to Xia et al. (2023) (Equations 1, 2): ...
Context 3
... water content increased over time in both species' seeds (Figure 1), indicating that there is no inhibition of metabolism that can block the germination process. Interestingly, although with very similar shapes between the seeds, the water absorption pattern of the two Crotalaria species was different. ...
Context 4
... spite of the mass increment over time, water uptake of C. ochroleuca seeds was slightly but continuous without no obvious triphasic pattern (Figure1). After 10 hours of water exposure, the seeds reached twice the initial fresh mass (0.148 g); in the following 10 hours, water absorption occurred even more gradually and the seeds had a fresh mass of 0.182 g (Figure 1). ...
Context 5
... the shape of water sorption isotherms of C. spectabilis exhibited fast increase in water uptake (Figure 1 (Figure 1). ...
Citations
The soils of the Barranca valley are among the best soils in Peru, but with so many years of application of agrochemicals and other agricultural practices, they are losing their productive capacity. Consequently, it was suggested to assess the impact of Crotalaria juncea L. as a green manure on soil fertility and the populations of bacteria and fungi present in the soil. Crotalaria was cultivated for 75 days and incorporated as green manure. After 90 days, the presence of bacteria and fungi was evaluated. Metabarcoding was employed, and the 16S rRNA and ITS2 amplicons were sequenced using the Illumina MiSeq platform. The sequences were processed using various bioinformatics tools. The results indicate that soils have a high diversity of bacteria and fungi. Likewise, in plots where the presence and action of natural biocontrol is suppressed (C0 and P0), pathogenic fungi increase their population in the fallow period (C1), while in P1, the addition of Crotalaria as a green manure promotes an increase in the population of bacteria and fungi, and at the same time it suppresses pathogenic fungi. The genera (bacterial and/or fungal) that increase due to the effect of Crotalaria are beneficial because they are involved as degraders of organic matter, promotion of plant growth and biological control of pathogens. Crotalaria is an alternative to improve soil fertility, increase the beneficial bacterial population, and reduce pathogenic fungi.
