Simin Haghanifar; Marjan Diyanat; Aidin Hamidi; Fereidon Ghasemkhan ghajar; Elias Soltani
Abstract
This research was done in order to find the most effective treatment to break the hardness of Persian camelthorn (Alhagi camelorum) seeds, which is one of the major problems of its cultivation on a large scale. treatments including 98% sulfuric acid (treatments of 25, 30 and 35 minutes) and 100°C ...
Read More
This research was done in order to find the most effective treatment to break the hardness of Persian camelthorn (Alhagi camelorum) seeds, which is one of the major problems of its cultivation on a large scale. treatments including 98% sulfuric acid (treatments of 25, 30 and 35 minutes) and 100°C hot water (treatments of 30 seconds, 1 and 3 minutes) were performed in comparison with the control. The factorial experiment was conducted in the form of a completely randomized design. The results showed that the populations had significant differences in terms of all traits and the difference between seed hardness treatments and their interaction effects for all traits was significant at the 1% level. The results of the findings show that the presence of the hard shell is a physical barrier and it acts as factors limiting germination by preventing the expansion of the embryo or by limiting water absorption and gas exchange. Therefore, applying a series of seed scratching treatments such as sulfuric acid treatment and 100°C water will improve the germination of the camelthorn seed. Because the use of treatments such as sulfuric acid involves problems such as the risk of working with acid, and also due to the cheapness and availability of water, the lack of special facilities and materials, the harmlessness and simplicity of working with it to stimulate germination and remove hardness, 100 °C water for 30 seconds and placement of seeds in 30 °C germinator is the priority for treating Iranian seeds.
S. Haghanifar; A. Hamidi; M.N. Ilikaee
Abstract
This study was conducted to evaluate the effect of treatment by Carboxin Thiram fungicide and Imidacoloropride pesticide on storability and some indicators of seed germination and vigor of maize single cross hybrid 704 in laboratory of department of agriculture at Islamic Azad University in Karaj. Seeds ...
Read More
This study was conducted to evaluate the effect of treatment by Carboxin Thiram fungicide and Imidacoloropride pesticide on storability and some indicators of seed germination and vigor of maize single cross hybrid 704 in laboratory of department of agriculture at Islamic Azad University in Karaj. Seeds were prepared from Kermanshah Agriculture and Natural Resources Research Centre. Seeds were treated by pesticide, imidacloprid in two rates, 3 and 6 g per kg of seed, fungicide Carboxin Thiram in the 2 and 2.5 per thousand, and combined 3 g Gaucho + 2 per thousand Carboxin Thiraman and non- seed treatment were as a control. Treated seed and control seed stored at room temperature (25°c) 3 months. Then standard germination test was conducted and final germination percentage (FGP) was evaluated, normal seedling percentage and some related traits of seed vigor including seedling length, primary root and shoot length, root and shoot dry weight, seedling dry weight, seedling length and weight vigor indices were measured and the experiment was conducted as completely randomized design with 4 replications. The results showed that highest percentage of seed germination was related to treatments of imidacloprid 6 g and the lowest percentage of seed germination was related to control (non- seed treatment), the highest and lowest meantime of germination and control respectively Carboxin Thiram was 2 per thousand. The highest, the lowest weight and seedling vigor index of 2 per thousand treated by imidacloprid 6 grams and Carboxin Thiram. Therefore it can be concluded that seed sterilization as a method to prevent accelerated aging, is disinfectant to maintain and improve seed quality.
