A Comprehensive Study of Variation in Selected QPM and Non-QPM Maize Inbred Lines

Sood, Ankita; Thakur, Kalpna; Gupta, Dorin; Singode, Avinash; Rana, Maneet; Lata, Swaran

doi:10.1007/s40003-017-0249-7

Cited by 3 publications

(5 citation statements)

References 33 publications

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“…Considering disease pressure characters, CM‐500 (Group 5) is one of the best resistant lines recorded in this study to consider for cultivation despite its low yield (2.855 t/ha) compared to other resistant lines like 11074 (Group 2) as shown in Tables 3 and 4. As in the study of Liu et al (2003), Azad et al (2012), Kumar et al (2015), Sood et al (2017), Kandel et al (2018), Singh et al (2019), Zawadi et al (2021), and Mukri et al (2022), current study results are in confirmatory with their findings regrading mean values between inbred lines forming clusters.…”

Section: Resultssupporting

confidence: 89%

“…Sood et al (2017),Kandel et al (2018),Singh et al (2019),Zawadi et al (2021), andMukri et al (2022), current study results are in confirmatory with their findings regrading mean values between inbred lines forming clusters.3.7 | Designation of resistant and susceptible genotypes after disease quantificationTolerance and resistance are two mechanisms against parasitism in crops. All cultivated plants come from wild species (e.g.…”

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confidence: 85%

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Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Shukuru,

Archana,

Kangela

2023

Journal of Phytopathology

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Bipolaris is one of the most important phytopathogenic fungal genera to cause disease in cereal crops. Southern corn leaf blight (SCLB) is a pandemic and widespread disease; it's found everywhere corn is grown, causing a noticeable reduction in crop yield. Most cultivated varieties of maize do not resist SCLB disease where it is reported. Nevertheless, previous researchers have reported some resistant varieties of maize. In this study, we tested inbred and hybrid lines collected from ICAR‐IIMR based in Ludhiana against the disease. The field experiment was setup using a Randomized Block Design with three replications in natural conditions. Here we evaluated lines by quantifying disease pressure, yield, and their attributes. Moreover, model‐based clustering allowed the identification of five groups. For the SCLB disease confirmation, infected maize leaves were collected and used for pathogen isolation, and a pure culture was maintained. Both disease assessment and data analysis focused more specifically on characters that showed significant differences between means, especially leaf area, percentage of leaf infection, disease incidence, disease severity, disease index by plot basis, number of grain rows formed per ear, weight of maize kernels per ear, each corn ear weight, shelling percentage, and grain yield. The two best clusters identified, namely Group 1 and Group 2, together comprise 11002, 11009, 11026, 11030, 11069, 11149, 11153, 11185, 11328, 11333, 11337, 11347, 11370, 11385, 11074, 11351, 11356, 11357, 11608, and Karav‐8523 lines. As per disease reaction, CM‐500 is individually one of the best lines in terms of SCLB resistance. Specific symptoms were clearly found on leaves, and pseudo‐septate conidia were observed under the microscope. Thus, several lines exhibited highly resistant reactions against SCLB, especially 11002, 11009, 11026, 11069, 11074, 11337, 11347, 11385, and CM‐500, and can still be recommended for farmers and in breeding programmes, for future usefulness as industries are complaining of maize shortages, and they present a great commercial potential.

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Section: Resultssupporting

confidence: 89%

supporting

confidence: 85%

Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Shukuru,

Archana,

Kangela

2023

Journal of Phytopathology

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“…The dendrogram grouped all genotypes on the basis of their similarity into three clusters, A, B and C for both QPM and inbred lines. Sood also performed PCA and cluster analysis on 40 QPM and non QPM lines that generate seven clusters on the base of various flowering and yield traits [16]. Both PCA and cluster analysis showed clearly differences between QPM and non QPM lines.…”

Section: Principal Component Analysismentioning

confidence: 99%

“…Yield contributing traits like 100 grain weight, yield per plant, cob diameter, cob length etc plays important role in selecting maize genotypes for variety development and are essential for breeding program and should be taken into account either simultaneously or alone for selecting high yielding genotypes. For developing a commercial QPM hybrid there must be a procedure study on the characterization of genotypes for agronomic traits [16]. For evaluation of large number of genotypes in breeding program statistical tools like D 2 and principle component analysis are used for checking the genetic potential and genetic divergence among genotypes.…”

Section: Introductionmentioning

confidence: 99%

Molecular and Morphological Characterization of Maize Genotypes for Opaque 2 Gene and Yield Contributing Traits

Sultana¹

2019

Big.data.Agr

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Maize (Zea maiz) is an important cereal crop grown on 48o N to 58o N with annual rain fall 250 mm to 5000 mm per year and having chromosome number 2n =2x=20. Like all cereal crops maize is also deficient in two essential amino acids tryptophan and lysine in maize grain, but some maize mutant identified in USA have higher tryptophan and lysine contents due to presence of opaque 2 gene. In the present study 50 maize inbred lines and 30 QPM hybrids were characterized for morphological and yield contributing traits. 50 inbred lines were screened for the presence of opaque 2 gene. Molecular characterization showed that all 50 genotypes were non QPM as two primes phi 57 and phi 112 confirmed by amplifying 169 bp in QPM and 161 in inbred lines whereas phi 112 amplified null fragments in QPM and 150 bp in all inbred lines. Analysis of variance, principal component and cluster analysis showed presence of wider diversity in maize inbred lines and QPM hybrids. There were highly significant differences present in inbred lines for all the parameters studied where as QPM hybrids were found to be non-significant for ear aspect, plant aspect, days to 50% silking, days to 50% tasseling and anthesis to silking interval. Correlation among different traits were also determined and it was found that plant height and ear height had highly significant positive correlation (0.483** and 0.423** respectively) with yield per plant, ear diameter and number of grains per row had significant positive correlation (0.303* and 0.556* respectively) with yield per plant in inbred lines whereas in QPM hybrids field weight was positively correlated (0.38*) with grain texture and negatively correlated (-0.778**) with plant aspect and ear aspect.

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“…Maize parental lines are the fundamental genetic materials essential for understanding the mechanism and principles of breeding [ 15 , 16 ]. In recent years, a large number of QPM inbred lines have been developed and successfully used as parents for generating hybrids and synthetic varieties [ 17 , 18 ]. Parental materials form the basis on which the development of stable and high yielding maize hybrids revolve [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Identifying Quality Protein Maize Inbred Lines for Improved Nutritional Value of Maize in Southern Africa

Amegbor

Biljon

Shargie

et al. 2022

Foods

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Malnutrition, as a result of deficiency in essential nutrients in cereal food products and consumption of a poorly balanced diet, is a major challenge facing millions of people in developing countries. However, developing maize inbred lines that are high yielding with enhanced nutritional traits for hybrid development remains a challenge. This study evaluated 40 inbred lines: 26 quality protein maize (QPM) lines, nine non-QPM lines, and five checks (three QPM lines and two non-QPM lines) in four optimum environments in Zimbabwe and South Africa. The objective of the study was to identify good-quality QPM inbred lines for future hybrid breeding efforts in order to increase the nutritional value of maize. The QPM lines had a lower protein content (7% lower) than that of the non-QPM lines but had 1.9 times more tryptophan and double the quality index. The lysine- and tryptophan-poor α-zein protein fraction was 41% lower in QPM than in non-QPM, with a subsequent increase in γ-zein. There was significant variation within the QPM inbred lines for all measured quality characteristics, indicating that the best lines can be selected from this material without a yield penalty. QPM lines that had both high protein and tryptophan levels, which can be used as parents for highly nutritious hybrids, were identified.

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A Comprehensive Study of Variation in Selected QPM and Non-QPM Maize Inbred Lines

Cited by 3 publications

References 33 publications

Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Molecular and Morphological Characterization of Maize Genotypes for Opaque 2 Gene and Yield Contributing Traits

Identifying Quality Protein Maize Inbred Lines for Improved Nutritional Value of Maize in Southern Africa

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