Mahrokh Bolandi; Parisa Sheikhzadeh Mosaddegh; Saeed Khomari; Nasser Zare; Jaber Sharifi
Abstract
To investigate the effect of different stages of seed maturity at the time of harvest, on emergence indices, physiological and functional characteristics of borage, the seeds of maternal plant were used and an experiment was carried out in a randomized complete block design with three replications at ...
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To investigate the effect of different stages of seed maturity at the time of harvest, on emergence indices, physiological and functional characteristics of borage, the seeds of maternal plant were used and an experiment was carried out in a randomized complete block design with three replications at the University of Mohaghegh Ardabili. The experimental treatment was the different stages of maturation of the seeds of the maternal plants at the time of harvesting, which were harvested from the maternal plants at three times (23, 32 and 38 days after flowering). The results showed that the effect of maturation stages at the time of seed harvesting from maternal plants on all measured traits (emergence indices, photosynthetic pigments of chlorophyll, secondary metabolites and grain yield components) was significant. The seeds obtained from the second stage of seed harvesting (32 days after flowering), due to the favorable maturation of seeds, with an increase in the percentage and rate of germination, improvement in the growth and rapid establishment of the plants, an increase in the amount of photosynthetic pigments of chlorophyll and the formation of a favorable plant density in the field, compared to the two masses of seeds obtained from the first and third stages of seed harvesting, had the greatest effect on increasing flower yield, grain yield, 1000-seed weight and other components of Grain yield. The highest amount of phenol and flavonoid was observed at the time of planting the seeds with harvest time 38 days after flowering,
Mahrokh Bolandi; Parisa Sheikhzadeh; Saeed Khomari; Nasser Zare; Jaber Sharifi
Abstract
To investigate the effect of the maternal plant's growth environment on qualitative characteristics and germination of borage seeds after storage, an experiment was carried out in a randomized complete block design with three replications at the University of Mohaghegh Ardabili. The treatments included ...
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To investigate the effect of the maternal plant's growth environment on qualitative characteristics and germination of borage seeds after storage, an experiment was carried out in a randomized complete block design with three replications at the University of Mohaghegh Ardabili. The treatments included seeds resulting from maternal plants sprayed with humic acid (0.5 g L-1), chitosan (1 g L-1), and the combination of humic acid and chitosan (0.5 g L-1 + 1 g L-1), salicylic acid. (4 mM), ascorbic acid (0.85 mM), potassium nitrate (20 mM) and control.The results showed that under non-storage conditions, the seeds that resulted from the maternal plants treated with bio-stimulants and growth regulators exhibited higher seed germination and seedling growth than those from the control plants. In this condition, foliar application of the maternal plants with humic acid+chitosan had the highest effect on the seed germination and seedling growth characteristics by increasing the germination percentage and rate, vigor index, seedlings dry weight and length. Although five years of dry seed storage reduced the seed viability and vigor, foliar application of maternal plants reduced the negative effects of storage on germination and enhanced the seed germination percentage and seedlings length, and dry weight by increasing the seed viability and seed vigor index. In general, among the foliar spraying treatments of the maternal plants, the combined foliar application of humic acid+chitosan, maybe due to the synergistic effects, can be considered the best treatment to improve the borage seed longevity, germination characteristics, and seedling growth.
