Effect of different salinity levels in the germination and vigor of seeds of five forage grasses
DOI:
https://doi.org/10.59741/agraria.v9i1.466Keywords:
Cenchrus ciliarís, Brachiaria brizantha, Chloris gayana, Brachiaria hibrido, Panicum maximumAbstract
Salinity causes serious problems that affect grasslands, reduc ing the availability of animal feed in arid and semiarid zones, as it requires the evaluation of genotypes tolerant and resistant to salt stress. The aim of this study was to evaluate the effect of different salinity levels with KCl in the capacity of germination and seed vigor of five forage grasses. The research was conducted in laboratory and greenhouse at the Universidad Autonoma Agraria Antonio Narro at Buenavista, Saltillo, Coah., Mexico, located at 25° 23 ' N and 103º 01' W, at an altitude of 1743 m. We used seeds of five species of forage grasses: Buffelgrass (Cenchrus ciliaris L.), Rhodes grass (Chloris gayana L.), palisade grass (Brachiaria brizantha), Brachiaria hybrid cv. Mulato II and Pani cum maximum Jacq cv. Tanzania. The treatments evaluated in both conditions were salinity using six concentrations of KCl: 0, 5, 10, 15, 20 and 25 dS / m, was used distilled water as control. The variables evaluated were: ability to germinate with vigor tests, germination rate index, speed of emergence index, aver age length of plumule, average radicle length and seedling dry weight. We used a completely randomized design with factorial arrangement with four replications. The results indicate that there are significant differences between species in the variables studied in the two environments. It was found that increasing salt concentrations, it directly affected the germination and vigor, thus obtaining a greater number of ungerminated seeds and abnormal seedlings. It is concluded that salt-tolerant species in germination and vigor are Tanzania and Brizantha.
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