↵​Urdbean Leaf Crinkle Disease- Assessment of Seed Transmissibility and Its Effect on Yield and Seed Quality in Urdbean [Vigna mungo (L.) Hepper]

2021 ◽  
Author(s):  
T. Priyanga ◽  
T.K.S. Latha ◽  
T. Ramya teja ◽  
G. Karthikeyan ◽  
K. Prabakar
Keyword(s):  
Yield Loss ◽  
Seed Quality ◽  
Seed Transmission ◽  
Quality Parameters ◽  
Vigna Mungo ◽  
Stress Factors ◽  
Disease Assessment ◽  
Seed Transmissibility ◽  
Effect On Yield ◽  
Biotic Stress Factors

Background: Urdbean leaf crinkle disease (ULCD) is one of the most devastating biotic stress factors which is responsible for drastic yield loss in urdbean [Vigna mungo (L.) Hepper]. The etiology of ULCD is still unknown and there are conflicting reports on its transmission through seed, insect vectors, grafting and infected sap. Methods: Per cent seed transmission of ULCD had been studied during kharif, rabi and summer during the year 2019-2020 under natural and insect proof conditions. The effect on yield and seed quality parameters due to ULCD infection was studied. Urdbean cultivar VBN 8 was used in the present study. Result: The per cent seed transmission of ULCD was recorded ranging from 52.88 to 71.64% under natural conditions. In the insect proof glasshouse condition, the seed transmission was 83.62%. All the yield and seed quality parameters were adversely affected upon ULCD infection. The reduction in yield was recorded as 64.36% over the uninfected healthy plants. In ULCD infected seeds, the germination was reduced (84%) as compared to healthy seeds (92%).

scholarly journals Role of Soybean mosaic virus–Encoded Proteins in Seed and Aphid Transmission in Soybean

2013 ◽  
Vol 103 (9) ◽  
pp. 941-948 ◽  
Author(s):  
Sushma Jossey ◽  
Houston A. Hobbs ◽  
Leslie L. Domier
Keyword(s):  
Mosaic Virus ◽  
Seed Quality ◽  
Soybean Mosaic Virus ◽  
Seed Transmission ◽  
Aphid Transmission ◽  
Plant Introduction ◽  
Sequence Motif ◽  
Coding Region ◽  
Encoded Proteins ◽  
Seed Transmissibility

Soybean mosaic virus (SMV) is seed and aphid transmitted and can cause significant reductions in yield and seed quality in soybean (Glycine max). The roles in seed and aphid transmission of selected SMV-encoded proteins were investigated by constructing mutants in and chimeric recombinants between SMV 413 (efficiently aphid and seed transmitted) and an isolate of SMV G2 (not aphid or seed transmitted). As previously reported, the DAG amino acid sequence motif near the amino terminus of the coat protein (CP) was the major determinant in differences in aphid transmissibility of the two SMV isolates, and helper component proteinase (HC-Pro) played a secondary role. Seed transmission of SMV was influenced by P1, HC-Pro, and CP. Replacement of the P1 coding region of SMV 413 with that of SMV G2 significantly enhanced seed transmissibility of SMV 413. Substitution in SMV 413 of the two amino acids that varied in the CPs of the two isolates with those from SMV G2, G to D in the DAG motif and Q to P near the carboxyl terminus, significantly reduced seed transmission. The Q-to-P substitution in SMV 413 also abolished virus-induced seed-coat mottling in plant introduction 68671. This is the first report associating P1, CP, and the DAG motif with seed transmission of a potyvirus and suggests that HC-Pro interactions with CP are important for multiple functions in the virus infection cycle.

Effect of integrated seed treatments on growth, seed yield and quality parameters in black gram [Vigna mungo (L.) Hepper]

2017 ◽  
Author(s):  
G. Sathiya Narayanan ◽  
M. Prakash ◽  
V. Rajesh Kumar
Keyword(s):  
Seed Yield ◽  
Seed Quality ◽  
Field Trials ◽  
Quality Parameters ◽  
Vigna Mungo ◽  
Growth And Yield ◽  
Black Gram ◽  
Seed Treatments ◽  
Legume Crop ◽  
Yield Parameters

Pulses are one of the most important legume crops in India contributing significantly high quality protein. Among the legumes, black gram (Vigna mungo L. Hepper), is an important legume crop in our country belonging to the family leguminoceae. The low productivity in pulses may be due to the fact that they are normally grown in marginal lands with inadequate soil moisture and poor fertility status. To increase yield under these circumstances, integrated seed treatment is given as a presowing treatment. Hence, a study was attempted to find out the influence of integrated seed treatments on growth and yield parameters in black gram. The seeds of black gram cv VBN 4 were subjected to various seed treatments and treated seeds along with the control were evaluated for their seed quality, growth, gas exchange and yield parameters both in laboratory and field trials. The study revealed that seeds fortified with MgSO4 + polykote + carbendazim + dimethoate + bioinoculant (Pseudomononas fluorescens) + Rhizobium + Azophos + pelleting with DAP recorded higher seed yield and other parameters when compared to control.

Effect of integrated seed treatments on growth, seed yield and quality parameters in black gram [Vigna mungo (L.) Hepper]

2017 ◽  
Vol 51 (06) ◽  
Author(s):  
G. Sathiya Narayanan ◽  
M. Prakash ◽  
V. Rajesh Kumar
Keyword(s):  
Seed Yield ◽  
Seed Quality ◽  
Field Trials ◽  
Quality Parameters ◽  
Vigna Mungo ◽  
Growth And Yield ◽  
Black Gram ◽  
Seed Treatments ◽  
Legume Crop ◽  
Yield Parameters

Pulses are one of the most important legume crops in India contributing significantly high quality protein. Among the legumes, black gram (Vigna mungo L. Hepper), is an important legume crop in our country belonging to the family leguminoceae. The low productivity in pulses may be due to the fact that they are normally grown in marginal lands with inadequate soil moisture and poor fertility status. To increase yield under these circumstances, integrated seed treatment is given as a presowing treatment. Hence, a study was attempted to find out the influence of integrated seed treatments on growth and yield parameters in black gram. The seeds of black gram cv VBN 4 were subjected to various seed treatments and treated seeds along with the control were evaluated for their seed quality, growth, gas exchange and yield parameters both in laboratory and field trials. The study revealed that seeds fortified with MgSO4 + polykote + carbendazim + dimethoate + bioinoculant (Pseudomononas fluorescens) + Rhizobium + Azophos + pelleting with DAP recorded higher seed yield and other parameters when compared to control.

scholarly journals Effect of biopriming on seed quality parameters of blackgram (Vigna mungo L.Hepper.) seeds

2017 ◽  
Vol 12 (Special-7) ◽  
pp. 1794-1799
Author(s):  
S. BENASEER ◽  
A. SABIR AHAMED ◽  
K. SUJATHA
Keyword(s):  
Seed Quality ◽  
Quality Parameters ◽  
Vigna Mungo

Yield and Seed quality of barley (Hordeum vulgare L.) as affected by variety, nitrogen level and harvesting time

2014 ◽  
Vol 2 (2) ◽  
pp. 93-100
Author(s):  
Shahnaj Yesmina ◽  
Moushumi Akhtarb ◽  
Belal Hossain
Keyword(s):  
Grain Yield ◽  
Seed Weight ◽  
Seed Quality ◽  
Quality Parameters ◽  
Nitrogen Level ◽  
Yield Attributes ◽  
Harvesting Time ◽  
Nitrogen Levels ◽  
Vigour Index

The experiment was conducted to find out the effect of variety, nitrogen level and harvesting time on yield and seed quality of barley. The treatments used in the experiment consisted of two varieties viz. BARI Barley 4 and BARI Barley 5, three harvesting time viz. 35, 40 and 45 Days after Anthesis (DAA) and nitrogen levels viz. 0, 70, 85 and 100 kg N ha-1 . The experiment was laid out in a spilt- spilt-plot design with three replications assigning the variety to the main plot, harvesting time to the sub-plots and nitrogen level to the sub-sub plots. Variety had significant effects on the all yield attributes except fertile seeds spike-1 . Seed quality parameters viz. normal seeds spike-1 , deformed seeds spike-1 , germination (%) and vigour index were statistically significant. The variety BARI Barley 5 produced higher grain yield and seed quality than BARI Barley 4. Grain yield from BARI Barley 5 and BARI Barley 4 were 4.59 t ha-1 and 4.24 t ha-1 , respectively. Significantly, the highest 1000-seed weight (46.90 g) was produced by BARI Barley 5 than (37.90 g) BARI Barley 4. The result revealed that harvesting time had significant effect on yield and yield attributes and seed quality parameters. Seed yield was highest (4.65 t ha-1 ) when the crop harvested at 40 DAA and it was increased linearly from 35 DAA. Maximum quality seed and 1000-seed weight (43.20 g) was obtained when the crop harvested at 40 DAA. All the yields, yield attributes and seed quality parameters were significantly influenced by nitrogen levels. The highest grain yield (5.14 t ha-1 ) was obtained when BARI Barley 5 variety was fertilized by 100 kg N ha-1 and the lowest (3.14 t ha-1 ) was obtained from control treatments. Normal seeds spike-1 , vigour index, germination (%) were better at 85 kg N ha-1 in variety of BARI Barley 5 than BARI Barley 4. So it can be concluded that BARI Barley 5 showed better result when fertilized with 100 kg N ha-1 and harvested at 40 DAA for getting maximum yield and 85 kg N ha-1 and harvested at 40 DAA for getting better quality seed.

Effects of Harvesting Date on Yield Loss Percentage of Mechanical Harvest and Seed Quality in Rapeseed

2014 ◽  
Vol 40 (4) ◽  
pp. 650
Author(s):  
Qing-Song ZUO ◽  
Hai-Dong HUANG ◽  
Shi CAO ◽  
Shi-Fen YANG ◽  
Qing-Xi LIAO ◽  
...  
Keyword(s):  
Yield Loss ◽  
Seed Quality

Identification of powdery mildew (Erysiphe graminis sp. tritici) and take-all disease (Gaeumannomyces graminis sp. tritici) in wheat (Triticum aestivum L.) by means of leaf reflectance measurements

2006 ◽  
Vol 1 (2) ◽  
pp. 275-288 ◽  
Author(s):  
Simone Graeff ◽  
Johanna Link ◽  
Wilhelm Claupein
Keyword(s):  
Powdery Mildew ◽  
Disease Severity ◽  
Near Infrared ◽  
Plant Stress ◽  
Stress Factors ◽  
Gaeumannomyces Graminis ◽  
Disease Assessment ◽  
Leaf Reflectance ◽  
Reflectance Measurements ◽  
Take All

AbstractThe ability to identify diseases in an early infection stage and to accurately quantify the severity of infection is crucial in plant disease assessment and management. A greenhouse study was conducted to assess changes in leaf spectral reflectance of wheat plants during infection by powdery mildew and take-all disease to evaluate leaf reflectance measurements as a tool to identify and quantify disease severity and to discriminate between different diseases. Wheat plants were inoculated under controlled conditions in different intensities either with powdery mildew or take-all. Leaf reflectance was measured with a digital imager (Leica S1 Pro, Leica, Germany) under controlled light conditions in various wavelength ranges covering the visible and the near-infrared spectra (380–1300 nm). Leaf scans were evaluated by means of L*a*b*-color system. Visual estimates of disease severity were made for each of the epidemics daily from the onset of visible symptoms to maximum disease severity. Reflectance within the ranges of 490780 nm (r2 = 0.69), 510780nm (r2 = 0.74), 5161300nm (r2 = 0.62) and 5401300 nm (r2 = 0.60) exhibited the strongest relationship with infection levels of both powdery mildew and take-all disease. Among the evaluated spectra the range of 490780nm showed most sensitive response to damage caused by powdery mildew and take-all infestation. The results of this study indicated that disease detection and discrimination by means of reflectance measurements may be realized by the use of specific wavelength ranges. Further studies have to be carried out, to discriminate powdery mildew and take-all infection from other plant stress factors in order to develop suitable decision support systems for site-specific fungicide application.

scholarly journals SEED QUALITY PARAMETERS OF PURPLE HORSEMINT FOR ELABORATION OF STANDART

2016 ◽  
pp. 62-63 ◽  
Author(s):  
L. V. Pavlov ◽  
E. V. Baranova ◽  
O. T. Paraskova ◽  
V. A. Kharchenko ◽  
O. V. Bespalko
Keyword(s):  
Seed Quality ◽  
Quality Parameters

scholarly journals Effect of Different Stages of Umbel Picking on Seed Quality Parameters, Yield and Economics of Fennel

2016 ◽  
Vol 2 (1) ◽  
pp. 4-7
Author(s):  
Hans Raj ◽  
Neeraj Pawar ◽  
Rajender Singh ◽  
Kuldip Kumar ◽  
K.K. Thakral ◽  
...  
Keyword(s):  
Seed Quality ◽  
Quality Parameters
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