Bita Oskouei; Leila Sadeghi; Kobra Moslemkhani; Hadis Afshar; Zahra Radmanesh
Abstract
Genetic purity, as one of the important characteristics of the quality of seed lots, has been considered in the national standards of certified seed producing countries to achieve desirable and stable characteristics of agricultural cultivars. According to the national standard, determining the other ...
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Genetic purity, as one of the important characteristics of the quality of seed lots, has been considered in the national standards of certified seed producing countries to achieve desirable and stable characteristics of agricultural cultivars. According to the national standard, determining the other speciese in the seed sample is considered as one of the important tests of seed quality. This feature is checked with an emphasis on recognizable characteristics in the seed analysis laboratory. The research has investigated the characteristics and differences in appearance and genetics of seeds off- type of chickpea seeds. The results showed that the seeds that were considered as off- type morphologically differed from the control in at least one of the measured traits. These seeds were different from the original seed in terms of color, shape seed surface roughness and seed groove, also the selected indices were similar in the first and second generation seeds. The results of the molecular test also confirmed the results of the morphological investigations. In Adel, Mansour, Arman cultivars, the samples that in morphological studies were considered as off-type, in molecular studies using microsatellite markers H3F09, H3C11 and H1A06 showed that the molecular profile was not uniform and allele diversity was greater than the main allele of cultivars. In the process of seed certification program, microsatellite markers are a suitable and complementary tool to the use of morphological markers to determine the genetic purity of chickpea seed samples.
Zahra Radmanesh; Samad Mobasser
Abstract
This study was aimed to determine the effect of seed size of the first (main) ear and the second ear and drying methods on seed quality of maize hybrid Maxima. For this purpose, two different experiments, including seed production field and laboratory experiment were conducted in 2014 and 2015, in Karaj. ...
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This study was aimed to determine the effect of seed size of the first (main) ear and the second ear and drying methods on seed quality of maize hybrid Maxima. For this purpose, two different experiments, including seed production field and laboratory experiment were conducted in 2014 and 2015, in Karaj. Six rows of maternal line and two rows of paternal line were planted in seed producing field in Shahid Motahari research Station in Sugar Beet Seed research Institute. The second experiment was conducted in qualified seed testing laboratory in SPCRI. The treatments composed of two levels of seed size (7mm and 6mm), two ears position (the first (main) and the second) and two drying methods (air drying and artificial drying). Results showed that the interaction of ear position, seed size and drying methods was significant for GP, GMD, Allometric index, SL, RWW, HW and Alpha-amylase activity. Maximum and minimum of seedling length was 34.48 cm and 30.42 cm respectively and related to seed size of 7 mm of the main ear. Moreover, maximum of germination percentage was 100% that related to seed size of 7mm and 6mm of the first ear which dried by dryer, while minimum value was 83% that related to seed size of 6mm of air dried ears. According to the results of this experiment it seems that seeds of maize hybrid Maxima of 7 mm that were dried by dryer machine because of priority of germination traits are more suitable for cultivation.
