scholarly journals Selectivity of the sulfonylurea herbicide group in the crop of maize inbred lines

Pesticidi ◽  
2003 ◽  
Vol 18 (3) ◽  
pp. 187-194 ◽  
Author(s):  
Milivoje Milivojevic ◽  
Lidija Stefanovic ◽  
Ivan Husic ◽  
Milena Simic ◽  
Zdravko Hojka
Keyword(s):  
Untreated Control ◽  
Growing Season ◽  
Inbred Lines ◽  
Sulfonylurea Herbicide ◽  
Growing Period ◽  
Estimated Parameters ◽  
Maize Inbred Lines ◽  
Grain Moisture ◽  
Moisture Percentage ◽  
Ear Height

The selectivity of the nicosulfuron, primisulfuron-methyl and rimsulfuron herbicides in relation to 20 PL maize inbred lines was monitored. Obtained results were compared with the untreated control. The following parameters were measured during the growing period: plant height (cm): ear height (cm) leaf width at the ear bottom (cm): tassel length (cm); number of primary tassel branches; grain yield at the and of growing season (t/ha) and grain moisture percentage (%). The effects of applied herbicides on observed maize inbred lines showed different degrees of selectivity. Average values of estimated parameters for all studied inbreeds differed significantly over applied herbicides. Nicosulfuron was most selective.

scholarly journals Breeding of early-maturing inbred maize lines within the collection gene pool of Ukraine

2021 ◽  
Vol 1 (98) ◽  
pp. 280-287
Author(s):  
S. Kotsiuba ◽  
Keyword(s):  
Weather Conditions ◽  
Growing Season ◽  
Vegetation Period ◽  
Inbred Lines ◽  
High Humidity ◽  
Important Indicator ◽  
Grain Moisture ◽  
Early Maturing ◽  
Maturity Groups ◽  
Corn Grain

The results of the study of inbred lines of corn on the basis of economically valuable features, such as: growing season, productivity, moisture yield. To distribute our maize material by precocity, a number of studies were conducted, namely: estimating the length of the growing season "shoots-full ripeness", which was determined in days, and a very important indicator-grain moisture at harvest as a percentage, it allowed to distribute two groups: early-maturing – (106–114) and middle-early – 114–123 days. Over the years of testing, the weather conditions varied considerably, which made it possible to evaluate the material under study in detail. In 2020, the growing season in the early-maturing group of lines was within 104.0 days, which is almost five days less in 2019. This trend was also observed for the group of middle-early lines. At the same time, the longer vegetation period was in 2019. Therefore, the aim of our study was to analyze the rate of moisture yield of corn grain of the studied lines of different maturity groups. The conducted researches allowed to trace the dynamics of grain moisture yield of corn lines of different maturity groups, to determine the variability of grain moisture of hybrids in different periods of grain maturation. 2019 was more favorable for growing corn, the plants formed a large vegetative mass, but the grain had a high humidity during the harvest period. This is due to a significant amount of precipitation (46.0 mm) in September 2019. Lines that had high harvest humidity were characterized by a long growing season, such as Um 337 and VIR 44. The group of the most productive included lines Um 337, Um 331, F7 and line MAN 053, which were ahead. The following year, Mind 337 and Mind 331 as a whole confirmed their positions, while F7 and MAN 053 yielded significantly lower yields.

scholarly journals Diversity analysis of maize inbred lines using DIVA-GIS under temperate ecologies

2016 ◽  
Vol 8 (3) ◽  
pp. 1576-1583 ◽  
Author(s):  
Z. A. Dar ◽  
A. A. Lone ◽  
N. Sunil ◽  
N. Sivaraj ◽  
G. Zafar ◽  
...  
Keyword(s):  
Climate Change ◽  
Quantitative Traits ◽  
South India ◽  
Diversity Index ◽  
Diversity Indices ◽  
Inbred Lines ◽  
Climatic Conditions ◽  
Diversity Analysis ◽  
Maize Inbred Lines ◽  
Ear Height

The vagaries of Climate Change variability need to be addressed and as climatic conditions change at particular experimental sites and maize producing regions, mega-environment assignments will need to be reassessed to guide breeders to appropriate new germplasm and target environments . The development of improved germplasm to meet the needs of future generations in light of climate change and population growth is of the upmost importance . Evaluation of the inbred lines from diverse ecosystems would be effective for production of lines with resilience towards climate variability. Hence, with this objective diverse set of inbred lines sourced from all over India were characterized and were evaluated with DIVA-GIS for diversity analysis of maize inbred lines. Grid maps generated for these maize inbred lines for eleven quantitative traits indicated that these lines can be sourced from North and South India. High Shannon diversity index with maximum range of 2.17-3.0, 2.25-3.0, 2.36-3.0, 2.4-4.0, 2.0-3.0, and 2.2-3.0 were recorded for the traits viz; plant height, ear height, grain weight, grain yield, kernel row and protein content respectively indicating the high response of these traits to ecosystem. However, inbred lines were found to be diverse for all the traits except for ears plant-1 (EPP) and they have been sourced from Northern and Southern parts of India while for EPP recorded less diversity index range of 0.4-1.0 indicating source from South India. Interestingly, less diverse inbred lines for all the eleven quantitative traits have been sourced from Indogangetic plains as indicated in diversity grid maps. Maximum diversity indices were recorded for anthesis silking interval (ASI), days to silking, days to tasseling, which are in the range of 0.97-2.0, 1.528-2.0, 1.516-2.0 and 1.528-2.0 respectively. Hence, DIVA-GIS enabled identification of diverse sources from varied ecosystems which can be used for developing improved lines/ cultivars with greater resilience towards climate change.

scholarly journals Genotypic effects on boron concentrations and response on boron fertilization in maize inbred lines

Genetika ◽  
2016 ◽  
Vol 48 (1) ◽  
pp. 297-305 ◽  
Author(s):  
Luka Andric ◽  
Vlado Kovacevic ◽  
Imre Kadar ◽  
Antun Jambrovic ◽  
Hrvoje Plavsic ◽  
...  
Keyword(s):  
Grain Yield ◽  
Seed Production ◽  
Female Parent ◽  
Growing Season ◽  
Genotype By Environment Interaction ◽  
Inbred Lines ◽  
Genotypic Differences ◽  
Environment Interaction ◽  
Grain Moisture ◽  
Boron Fertilization

Boron (B) deficiency in maize can result in barren cobs attributed to silks being nonreceptive which is particularly important for the female parent in seed production. The objectives of this study were 1) to investigate genotypic differences among nine female inbred lines used in seed production for B concentration in ear-leaf and grain, as well as for grain yield and moisture in a three-year experiment (2006-2008) and 2) to determine response and relations among the traits when four of the female inbred lines are treated by foliar boron fertilization - three times in 10-days interval with 0.5% Solubor solution (17.5% B) during one growing season (2008). The investigations were performed on Experimental field of Agricultural Institute Osijek, (soil type: eutrical cambisol). Highly significant differences among the nine female inbred lines were detected for B concentration in ear-leaf (from 14.7 to 46.7 mg B kg-1) and grain (from 1.20 to 2.06 mg B kg-1) as well as for grain yield (from 3.33 to 4.83 t ha-1) and grain moisture (from 14.7% to 26.6%). However, there were also significant effects of growing season and the genotype by environment interaction for all four traits. Positive and moderate correlations were found between the boron status in plant and grain yield. Although B concentrations were considerably increased by foliar boron fertilization (averages 41.7 and 125.3 mg B kg-1 in leaves, 1.79 and 2.80 mg B kg-1 in grain, for control and fertilization, respectively), in general grain yield differences among treatments were non-significant. (averages 5.21 and 5.15 t ha-1, respectively).

scholarly journals Yield and forage quality in maize (Zea mays L.) inbred lines

2021 ◽  
Author(s):  
Odilon Gayosso Barragán ◽  
Griselda Chávez-Aguilar ◽  
José Angel Marroquín-Morales ◽  
Alfonso López-Benítez
Keyword(s):  
Genetic Diversity ◽  
Plant Height ◽  
Inbred Lines ◽  
Forage Yield ◽  
Neutral Detergent Fiber ◽  
Acid Detergent Fiber ◽  
Maize Inbred Lines ◽  
Ear Height ◽  
Female Flowering ◽  
Improvement Programs

Objective: To analyze the genetic diversity (agronomic attributes, forage yield, and fiber content) of 100 maize inbred lines and to identify genotypes with potential for the breeding of plants with the said traits. Design/methodology/approach: One-hundred maize inbred lines were evaluated in two environments, in a 10 x 10 complete block experimental design, with two repetitions. Days to male flowering, days to female flowering, ear height, plant height, stem diameter, green forage yield, neutral detergent fiber, and acid detergent fiber data were recorded. Results: Significant differences were observed in the environmental sources of variation and genotypes for all the traits evaluated. The first four components account for 81% of the total variation observed and the first two account for 66% of the variation. The variables which have the highest absolute value and which strongly influence the dispersion of the genotypes, as well as the formation of groups, were: plant height, forage yield, and acid detergent fiber (component one) and days to female flowering and days to male flowering (component two). Consequently, the genotypes were dispersed in four groups. Study limitations/implications: It was not possible to conduct genetic diversity studies using molecular markers. Findings/conclusions: The grouping pattern of inbred lines shows the genetic diversity present; this can be an important tool in genetic improvement programs aimed at obtaining hybrids with specific characteristics.

scholarly journals Combining ability and genetic divergence among tropical maize inbred lines using SSR markers

2021 ◽  
Vol 43 ◽  
pp. e53317
Author(s):  
Tauana Gibim Eisele ◽  
Dener Lazzari ◽  
Tereza Aparecida da Silva ◽  
Ronald José Barth Pinto ◽  
Robson Akira Matsuzaki ◽  
...  
Keyword(s):  
Grain Yield ◽  
Ssr Markers ◽  
Genetic Divergence ◽  
Combining Ability ◽  
Inbred Lines ◽  
Simultaneous Increase ◽  
Additive Effects ◽  
Tropical Maize ◽  
Maize Inbred Lines ◽  
Ear Height

Our objectives were to evaluate general and specific combining ability (SCA) and genetic divergence among tropical maize inbred lines using single sequence repeat (SSR) markers. Thirteen inbred lines were crossed based on a complete diallel scheme. Hybrids and three checks were evaluated in a lattice experimental design. Silk and anthesis flowering, average plant height, average ear height, white spot (Pantoea ananatis) and gray leaf spot (Cercospora zeae-maydis) severity, and grain yield were evaluated. Significant differences (p < 0.05) for general and specific combining abilities were observed for all traits. Based on additive effects, inbred lines 1 (Flash) and 12 (SG 6015) were selected to reduce the flowering period and plant and ear height. Inbred lines 2 (CD 303) and 3 (AG 8080) were selected to reduce disease severity. For the simultaneous increase in grain yield and reduced severity of diseases, line 11 (AG 9090) as a parent or tester in topcross schemes is recommended. According to non-additive effects, crosses 2 (CD 303) × 13 (DKB 747) and 11 (AG 9090) × 12 (SG 6015) were selected for grain yield and future breeding programs. Six groups were identified using SSR markers; a major group contained six inbred lines. Because of the minor relationship between genetic divergence and SCA effects on grain yield limits, the use of the groups for future divergent crosses is recommended.

scholarly journals Evaluation of yellow maize inbred lines for maturity and grain yield related traits using line × tester analysis

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Syed Farman Ullah ◽  
Fawad Ali ◽  
Abdus Salam ◽  
Muhammad Siddique Afridi ◽  
Hidayat Ur Rahman
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Inbred Lines ◽  
Kernel Weight ◽  
Cereal Crop ◽  
Seed Setting ◽  
Maize Inbred Lines ◽  
Ear Height ◽  
Source Populations ◽  
Crop Research

Thirty yellow maize inbred lines were selected from different source populations and planted in isolation with common male testers (YD-2 and YD-4) in 1:4:1 ratio at Cereal Crop Research Institute (CCRI) Pirsabak, Nowshera during spring-2014 (season–I). On the bases of best seed setting and other important traits, eighteen test-crosses were selected using line × tester approach. The developed 18 test-crosses, nine parental lines and two testers along with two check cultivars (Sarhad Yellow and CS2Y10) were grown in summer season-2014 (July – November) using two replications.Data were collected on various maturities and yield related traits via; days to pollen shedding, silking, ear height, plant height, 100-kernel weight, kernel row ear-1 and grain yield. Significant differences were observed among test-crosses for yield related traits mainly 100-kernel weight and grain yield. L-9 using YD-4 as a tester revealed minimum days to pollen shedding (50.5 days) and days to silking (52.5 days). L-3 using YD-2 as a tester recorded maximum plant height while, L-9 using YD-4 as a tester obtained maximum ear height and length. L-9 using YD-4 as a tester revealed high 100-kernel weight, grain yield and high GCA effect, while L-8 using YD-4 as a tester recorded high SCA effect for 100-kernel weight. L-9 exhibited high GCA effect for grain yield while, high SCA effect was obtained for L-2 using tester (YD-2). L-9 using tester YD-4 revealed maximum mid-parent and best-parent heterosis for ear length and grain yield. For maximum traits, L-9 was the best combiner followed by L-3 and L-6 using the same tester (YD-4) under conducted study.

Yield performance with heritability measurements of half sib families obtained from maize variety Azam

1970 ◽  
pp. 33-36
Author(s):  
Faizan Mahmood, Hidayat- Ur-Rahman, Nazir Ahmad ◽  
Fahim-ul- Haq ◽  
Samrin Gul, Quaid Hussain ◽  
Ammara Khalid ◽  
Touheed Iqbal ◽  
...  
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Heritability Estimate ◽  
Kernel Weight ◽  
Yield Performance ◽  
Grain Moisture ◽  
Maize Variety ◽  
Ear Height ◽  
Sib Families

This study evaluated the performance of 64 half sib families (HSF) derived from “Azam” variety of maize using partially balanced lattice square design with two replications. Data were recorded on grain yield and other agronomic traits. Observations showed difference in half-sib families for studied traits. Among the 64 half-sib families, minimum days to 50% tasseling (51 days) were observed for HS-49 while maximum (57 days) for HS-63. Minimum days to 50% silking (56 days) were counted for HS-6 while maximum (63 days) for HS-23. Minimum days to 50% anthesis (55 days) were counted for HS-1 and HS-6 while maximum (62 days) for HS-23. Similarly, minimum ASI (-2 days) were observed in HS-1, HS-15, HS-16, HS-28 and HS-63 while maximum (2 days) in HS-48. Minimum (60 cm) ear height was recorded for HS-11 and maximum (93.5 cm) for HS-28. Minimum fresh ear weight (1.3 kg) was weighted for HS-17 while maximum (3.2 kg) for HS-21. Grain moisture was recorded minimum (19.35 %) for HS-19 and maximum (31.25%) for HS-2. HS-42 showed minimum (28 g) 100 kernel weight while HS-5 showed maximum (47 g). Grain yield was minimum (2323 kg ha-1) for HS-17 and maximum (5742 kg ha-1) for HS-21. Maximum heritability estimate (0.92) was recorded for fresh ear weight, while minimum (0.41) was observed for ear height.

Combining Ability of Traits Related to Nitrogen Use Efficiency in Eighteen Maize Inbred Lines

2014 ◽  
Vol 40 (5) ◽  
pp. 838 ◽  
Author(s):  
Chao CUI ◽  
Ju-Lin GAO ◽  
Xiao-Fang YU ◽  
Zhi-Jun SU ◽  
Zhi-Gang WANG ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Combining Ability ◽  
Inbred Lines ◽  
Nitrogen Use ◽  
Maize Inbred Lines ◽  
Use Efficiency
Sign in / Sign up

Export Citation Format

Share Document