scholarly journals Pearl Millet Blast Pathogen Virulence Study and Identification of Resistance Donors on Virulent Isolate

Author(s):  
K Bramareswara Rao ◽  
SR Krishna Motukuri ◽  
K Arun Kumar ◽  
CHVN Praveen Babu ◽  
Vaibhav Pathak

Pearl Millet leaf Blast caused by Pyricularia grisea [teleomorph: Magnaporthe grisea], is spreading at an alarming rate in the major Pearl millet growing geographies of India effecting grain yield and green fodder yield. Blast isolates collected from Jaipur, Alwar and Toopran regions of India and virulence study conducted to identify the most virulent isolate among the three isolates. Artificial screening for Blast conducted on a raised bed method utilising uniform Blast Nursery (UBN) method. Eleven Pearl Millet genotypes (ICMB01333, ICMB03444, ICMB03555, ICMB06111, ICMB95444, ICMB11666, ICMB14333, ICMB14666, ICMB97111, ICMR12888 and ICMR06444) were screened with three blast isolates utilising artificial screening method. Among the eleven genotypes, ten genotypes were showing susceptible to Jaipur isolate indicating that the Jaipur isolate having highest virulence among the three isolates. To identify Blast resistant donors for Jaipur isolate, a set of 93 genotypes containing of 45 maintainer lines and 48 restorer lines were screened under both UBN and field conditions (Jaipur, Rajasthan). Among all the lines evaluated, five lines are showing resistant reaction for Jaipur isolate with disease score less than 1.9. ICMR06444 from restorer background and IC414K14B5, IC594K16B5, RBB037 and IC6912K18B from maintainer background are identified as resistant lines. Identified lines can be utilised in pearl millet hybrid breeding programme.

2002 ◽  
Vol 1 (4) ◽  
pp. 326-327 ◽  
Author(s):  
Muhammad Naeem ◽  
Muhammad Shahid Muni . ◽  
Ahmad Hasan Khan . ◽  
Sultan Salahuddin .

Author(s):  
K. K. Dhedhi ◽  
V. V. Ansodariya ◽  
N. N. Chaudhari ◽  
J. S. Sorathiya

Twenty three fodder pearl millet genotypes including two checks <italic>viz</italic>., DFMH 30 and PAC 981 were evaluated at Pearl millet Research Station, Junagadh Agricultural University (JAU), Jamnagar and Grassland Research Station, JAU, Dhari during <italic>kharif</italic> 2014. Significant differences were observed among the genotypes for days to 50 % flowering, days to maturity, plant height, dry fodder yield and green fodder yield while differences for plant population and grain yield were non significant. The locations differences were found significant for all the characters studied. The genotypes x locations differences were observed non significant for all the traits except plant population and grain yield. Days to 50 % flowering varied from 52 days (DFMH 30) to 77 days (IP 15564). Days to maturity ranged between 75 days (IP 2761) to 96 days (IP 14542). IP 22269 (342 cm) was observed the tallest genotype, while, check DFMH 30 (252 cm) was manifested the shortest genotype. Dry fodder yield ranged from 96 q/ha (IP 5153, IP 2761) to 208 q/ha (ICMV 05222). The genotype ICMV 05222 (390 q/ha) produced the highest green fodder yield among all the genotypes followed by IP 6202 (348 q/ha) and IP 15564 (341 q/ha). Hence, these three genotypes <italic>viz</italic>., ICMV 05222, IP 6202 and IP 15564 may be considered for general cultivation under rainfed conditions of Gujarat.


2018 ◽  
Vol 51 (2) ◽  
pp. 67-73
Author(s):  
A.H. Shah ◽  
H. Karar ◽  
M.S. Farooq ◽  
M.S.A. Bazmi ◽  
G. Nabi ◽  
...  

Abstract Pearl millet (Pennisetum glaucum) is considered an important kharif crop, which is grown extensively in the arid and semi-arid tropical regions, where other crops, like sorghum and maize, fail to produce economic yields. Its grains are valued as human food, while its dry stover makes significant livestock ration in croplivestock farming system. Pearl millets (MB-87), a newly developed variety of Fodder Research Institute, Sargodha, Pakistan, is one of the best pearl millet variety, which gives more than one cutting and helps to cope with fodder lean period, as well as more income can be generated in addition to seed. So, overcome the scarcity period the study was conducted to check the effect of last cutting dates on seed production of multicut pearl millet MB-87 was conducted at Fodder Research Institute, Sargodha, Pakistan, during 2015 and 2016. Following parameters were taken in to consideration, i.e. plant height (cm), stem thickness (cm), number of leaves per tiller, number of tillers per plant, green fodder yield (t/ha), length of head (cm), 1000 grains weight (g) and grain yield (kg/ha). The results depicted that grain yield, i.e. 319.20, was maximum and head length was highest, i.e. 35.13 cm on 20th of August having last date of cut, whereas all others parameters were found to be nonsignificant. Multicut bajra gives three cutting of fodder, followed by seed, as compared with conventional bajra, which gives only one cutting or seed. Therefore, it is more economical for the growers of fodders to grow the pearl millets MB-87 as fodder, as well as for seed purposes. So, it is concluded that for gaining maximum grain yield of multicut pearl millet MB-87 the last cutting date should be 20th of August. In future, pearl millet is likely to play a larger role in providing food and nutritional security.


Plant Disease ◽  
2013 ◽  
Vol 97 (2) ◽  
pp. 189-195 ◽  
Author(s):  
Rajan Sharma ◽  
H. D. Upadhyaya ◽  
S. V. Manjunatha ◽  
K. N. Rai ◽  
S. K. Gupta ◽  
...  

Blast, also known as leaf spot, caused by Pyricularia grisea (teleomorph: Magnaporthe grisea), has emerged as a serious disease affecting both forage and grain production in pearl millet in India. Pathogenic variation was studied in a greenhouse using 25 M. grisea isolates collected from four major pearl-millet-growing states in India (Rajasthan, Haryana, Maharashtra, and Uttar Pradesh) on 10 pearl millet genotypes (ICMB 02444, ICMB 02777, ICMB 06444, ICMB 93333, ICMB 96666, ICMB 97222, ICMB 99444, 863B, ICMR 06222, and ICMB 95444). Differential reactions to the test isolates were recorded on ICMB 02444, ICMB 93333, ICMB 97222, 863B, and ICMR 06222. The 25 isolates were grouped into five different pathotypes based on their reaction types (virulent = score ≥ 4 and avirulent = score ≤ 3 on a 1-to-9 scale). For the identification of resistance sources, a pearl millet mini-core comprising 238 accessions was evaluated under greenhouse conditions against five M. grisea isolates (Pg118, Pg119, Pg56, Pg53, and Pg45) representing the five pathotypes. Of 238 accessions, 32 were found to be resistant to at least one pathotype. Resistance to multiple pathotypes (two or more) was recorded in several accessions, while three accessions (IP 7846, IP 11036, and IP 21187) exhibited resistance to four of the five pathotypes. Four early-flowering (≤50 days) blast-resistant mini-core accessions (IP 7846, IP 4291, IP 15256, and IP 22449) and four accessions (IP 5964, IP 11010, IP 13636, and IP 20577) having high scores (≥7) for grain and green fodder yield potential and overall plant aspect were found to be promising for utilization in pearl millet improvement programs. Identification of five pathotypes of M. grisea and sources of resistance to these pathotypes will provide a foundation for breeding for blast resistance in pearl millet in India.


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