Research and Application on the Effect of Magnaporthe grisea Toxin on Rice

2013 ◽  
Vol 295-298 ◽  
pp. 2333-2337
Author(s):  
Yun Gao Hu ◽  
Guo Tao Yang ◽  
Chong Hua Xie ◽  
Ling Zhang ◽  
Yong Jun Chen
Keyword(s):  
Seed Germination ◽  
Magnaporthe Grisea ◽  
Hybrid Rice ◽  
Rice Variety ◽  
High Growth ◽  
Inhibitory Effect ◽  
Culture Conditions ◽  
Inhibition Rate ◽  
Seed Selection ◽  
Germination And Growth

Knowledge remains limited about whether the optimum culture condition of getting the most virulent M.oryzae toxins can be found and applied for resistant seed selection. The inhibition of seed germination and the growth of embryo and radicle in rice treated by the Magnaporthe grisea toxin that got from different culture conditions were studied. The result suggested that the M.oryzae toxin had great inhibitory effect on seed germination and growth of embryo and radicle in rice. The M.oryzae toxin cultivated on 23 °C, pH 8.0 for 20d has strongest inhibition on seed germination of the hybrid rice variety of GangYou725, the inhibition rate approach 70%; Being cultivated at the same pH and 23°C～28°C for approximate 10d, it is easy to get the M.oryzae toxin for high growth inhibition of embryo and radicle. It can reduce the workload and increase accuracy to use M.oryzae toxin to identify blast resistances of rice and select resistant materials.

Inhibitory effect of chemical combinations on seed germination and pre-harvest sprouting in hybrid rice

2016 ◽  
Vol 80 (3) ◽  
pp. 281-289 ◽  
Author(s):  
Qijuan Hu ◽  
Yuying Fu ◽  
Yajing Guan ◽  
Cheng Lin ◽  
Dongdong Cao ◽  
...  
Keyword(s):  
Seed Germination ◽  
Hybrid Rice ◽  
Inhibitory Effect

scholarly journals Effect of salt on seed germination and plant growth of Anacardium occidentale

2021 ◽  
Vol 15 (4) ◽  
pp. 1563-1572
Author(s):  
Jacob Tchima Massai ◽  
Hamida Aminatou ◽  
Jean Boris Sounya ◽  
Dieudonné Ranava ◽  
Sebastien Vondou Vondou ◽  
...  
Keyword(s):  
Seed Germination ◽  
Salt Concentration ◽  
Inhibitory Effect ◽  
Black Soil ◽  
Cow Manure ◽  
Farming Practices ◽  
Germination Inhibition ◽  
Germination And Growth ◽  
Over Time

In Cameroon, despite the increased growing of cashew in recent years, orchard yields remain low due to the quality of seed and unsuitable peasant farming practices. This work realized in the nursery at Wakwa aimed at evaluating the effect of different concentrations of salt on cashew germination and growth. The trial was conducted during the rainy season. The substrate was made up of a mixture of sand, black soil and cow manure respectively at 1/4, 1/2 and 1/4. Seeds were soaked in different proportions of salt solution (5%, 10% and 15%) for 24 hours. The experimental design was a complete randomized block comprising four treatments, each of which was replicated three times. Treatments consisted of different percentage of salt (5%. 10% and 15%) and the control without salt (0%). Salt concentration acted in different ways on germination, survey rate and plants growth. Germination inhibition by salt changed according to the salt concentration and time, being highest at the start of experiment and decrease over time. At 28DAS, 5% and 10% concentrations did not have an inhibitory effect, which made it possible to improve survey rate at this time. Conversely, 15% had a stimulating effect on the vigor and plants growth of cashew. This study showed that soaking cashew seeds in the salt after 24 hours at different concentration does not delay germination and concentration 15% allow to obtained well growth and more vigorous plants.

scholarly journals Assessing the effects of accumulated Cd(II) on seed germination and root development of Arabidopsis thaliana

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Yejin Lee ◽  
Jinwoo Jang ◽  
Yangwon Jeon ◽  
Hyojin Kim ◽  
Geupil Jang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Seed Germination ◽  
Inhibitory Effect ◽  
Model System ◽  
Toxic Effects ◽  
Auxin Response ◽  
E Coli ◽  
Germination And Growth ◽  
The Relationship ◽  
Visual Marker

AbstractIn this study, Arabidopsis thaliana was used as a model system to assess the toxic effects of cadmium on plant development and growth. The germination and growth of A. thaliana was inhibited by Cd(II), and the inhibitory effect was dosage-dependent. The significant decrease of germination rates and root growths of A. thaliana were observed from 50 mg/L and 25 mg/L of CdCl2, respectively. Although both shoot and root growths were suppressed by Cd(II), root developments were more sensitive to Cd(II) than shoot developments, as evidenced by shoot growths observed over 50 mg/L of CdCl2. In the concordance to this result, it was also observed that the expression of DR5::VENUS, a visual marker of auxin response, was dependent on the Cd(II) concentration and was strongly reduced from 5 mg/L of CdCl2. In addition, the E. coli-based biosensors were employed to quantify accumulated Cd(II) in plants to understand the correlation between toxic effects and Cd(II) in plants. As a result, it was revealed that 0.012 mg/g and 0.138 mg/g of Cd(II) in dried plants were corresponded to the concentration inhibiting root developments and root growths, respectively. Although it needs further investigations, the findings play a significant role in assessing the toxic effects of Cd(II) based on the relationship between the toxic effects and accumulated Cd(II) concentrations in plants.

scholarly journals Inhibitory effect of eugenol on seed germination and pre-harvest sprouting of hybrid rice (Oryza sativa L.)

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Qijuan Hu ◽  
Cheng Lin ◽  
Yajing Guan ◽  
Mohamed Salah Sheteiwy ◽  
Weimin Hu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Seed Germination ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Inhibitory Effect

scholarly journals Performance of hybrid rice grown from separated tillers

2019 ◽  
Vol 17 (4) ◽  
pp. 507-513
Author(s):  
FN Kamarum Munira ◽  
Md. Parvez Anwar ◽  
Sabina Yeasmin ◽  
Md. Harun Or Rashid ◽  
Mst Farzana Rahman ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Hybrid Rice ◽  
Rice Variety ◽  
Field Laboratory ◽  
Split Plot ◽  
Rice Seeds ◽  
Four Levels ◽  
Plot Design

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July to November 2016 to investigate the performance of separated tillers of hybrid rice variety Dhani Gold. The experiment comprised three times of tiller transplantation viz. 3, 4 and 5 week aged tiller seedlings and four levels of number of tiller seedlings transplanted hill-1 viz. 2, 3, 4 and 5 tiller seedlings hill-1 laid out in a split plot design with 3 replications. The highest plant height was obtained when 3-week aged tiller seedlings were transplanted at the rate of 3 tiller seedlings hill-1. The highest number of total tillers hill-1 and number of effective tillers hill-1 were found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grains panicle-1 was obtained when 4-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grain yield was found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The lowest grain yield was found when 5-week aged tiller seedlings were transplanted with 2 tiller seedlings hill-1 in hybrid rice variety Dhani Gold. Based on the findings of the present study it may be concluded that 3-week old tiller seedlings of Dhani Gold should be transplanted at the rate of 4 or 5 tiller seedlings hill-1 for higher yield. Thus present study confirms the potentiality of growing hybrid rice from separated tillers in case of unavailability of seedlings or to minimize the seed cost of high value hybrid rice seeds. J Bangladesh Agril Univ 17(4): 507–513, 2019

scholarly journals The effect of five kinds of colloidal polymers for seed germination and growth in sand

2021 ◽  
Vol 804 (4) ◽  
pp. 042036
Author(s):  
Wenxu Zhang ◽  
Lulu Guo ◽  
Jing Chen ◽  
Shengfang Liu ◽  
Yifan Wang ◽  
...  
Keyword(s):  
Seed Germination ◽  
Germination And Growth

The Effect of High Concentrations of Ethylene on Seed Germination of Douglas Fir (Pseudotsugamenziesii (Mirb.) Franco)

1975 ◽  
Vol 5 (3) ◽  
pp. 419-423 ◽  
Author(s):  
Carey Borno ◽  
Iain E. P. Taylor
Keyword(s):  
Seed Germination ◽  
Germination Rate ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Douglas Fir ◽  
Control Treatment ◽  
Continuous Exposure ◽  
Short Term ◽  
Short Term Exposure ◽  
High Concentrations

Stratified, imbibed Douglas fir (Pseudotsugamenziesii (Mirb.) Franco) seeds were exposed to 100% ethylene for times between 0 and 366 h. Germination rate and germination percentage were increased by treatments up to 48 h. The 12-h treatment gave largest stimulation; 30% enhancement of final germination percentage over control. Treatment for 96 h caused increased germination rate for the first 5 days but reduced the germination percentage. Germinants were subject to continuous exposure to atmospheres containing 0.1 – 200 000 ppm ethylene in air, but it did not stimulate growth, and the gas was inhibitory above 100 ppm. Although some effects of high concentrations of ethylene may have been due to the lowering of oxygen supplies, this alone was insufficient to account for the full inhibitory effect. The mechanism of stimulation by short-term exposure to ethylene is discussed.

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