Inbreeding depression in maize

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August undefined, 2024

WebDec 1, 2015 · Development of S1 inbred lines and estimation of inbreeding depression in two maize (Zea mays L.) populations. Abstract To know the effect of inbreeding depression, this study was conducted... WebPDF) Development of S1 inbred lines and estimation of inbreeding depression in two maize (Zea mays L.) populations CyberLeninka. Inbreeding and disease in tropical shrimp aquaculture: a reappraisal and caution – topic of research paper in Biological sciences. ... Evidence for inbreeding depression in a species with limited opportunity for ...

Inbreeding research paper - xmpp.3m.com

WebInbreeding depression also occurs in wild species in natural habitats, and its impacts are typically more severe than in captivity. For example, inbreeding depression was detected in 90% of 157 data sets from a broad array of animal and plant taxa in natural environments, and the average impact was seven-fold greater than in captivity. WebInbreeding depression refers to the decrease or loss of fitness and strength which is mainly caused due to inbreeding. In simpler form, the mating between the relatives in a small population is common and this may lower … hip strengthening exercises for desk

A Genetic Interpretation of the Variation in Inbreeding Depression

WebSep 23, 2016 · Inbreeding depression in single, three way and double-cross hybrids of maize Currently, one of the acclaimed alternatives for increasing maize yield is accomplished through utilization of heterosis in hybrid cultivars. However, upon performing crosses between related pairs, there are losses due to inbreeding depression. WebInbreeding depression Example for maize height F 2 F 3 F 4 F 5 F 6. 9 Fitness traits and inbreeding depression •Often seen that inbreeding depression is strongest on fitness-relative traits such as yield, height, etc. •Traits less associated with fitness often show less inbreeding depression WebIn order to verify the genetic and agronomic value, yield potential and inbreeding depression of synthesized composites, as well as quantifying the population variability and incorporating new sources of semiexotic germplasm in maize genetic improvement programs, four populations, identified as NAP-FA x HG-71 (P1), NAP-FL x HG-49 (P2), NAP … homes for sale in mount pleasant wi

An epigenetic basis of inbreeding depression in maize

Domestication reshaped the genetic basis of inbreeding …

WebMar 1, 2024 · Rajendra Agricultural University Abstract The present investigation was carried out for studying heterosis and inbreeding depression of twenty eight hybrids (F1 ʼ s) and their F2 ʼ s made by... WebMar 1, 1994 · Abstract. Limited empirical data are available to determine how inbreeding depression rates for quantitative traits have changed with long-term germplasm … homes for sale in mount laurel alabamaWebDec 1, 2024 · Therefore, IMPH is a function of inbreeding depression, genetic divergence, and dominance whereas panmictic-midparent heterosis is a function only of genetic divergence and dominance (Lamkey and Edwards 1999). In maize, heterosis is exploited by creating single-cross hybrids from two genetically distinct heterotic pools. homes for sale in mount olive nj

"WebSep 2, 2024 · These results suggest a mixture of mostly polygenic, smalleffect recessive variation underlying inbreeding depression, with an additional contribution from rare … " - Inbreeding depression in maize

Inbreeding depression in maize

The genome-wide dynamics of purging during selfing in maize

WebJun 10, 2024 · Onion, carrot, maize, sunflower, etc. are few examples of plants created by inbreeding depression either by the self-pollination or cross-pollination method. This development is discovered in many different plant species that are a unit any sorted supported the subsequent four classes. WebNAR of Two Maize Inbreds and Their F1 Hybrid NAR at Following Days from Emergence 6-15 15-21 21-28 28-38 z mg/cm2*d-1 Ag Inbred UA. ... . significantly greater than that of CM49 on day 6, although on all Except for the slight depression in the hybrid growth curve (Fig. subsequent harvests hybrid shoots were significantly heavier (Fig. 3) which ...

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WebPopulations of N e = 20 that remained extant after 60 generations, showed inbreeding depression, with the mean fitness of these populations being only 45% of the outbredcontrols. There was considerable variationamong the 31 inbred populations in fitness, butnone of the N e = 20 populations hadfitness that was higher than the … WebRate of inbreeding depression for yield by selfing was b 1 = --46.53 q/ha and by full-sibbing, b L = --45.11 q/ha. At comparable levels of homozygosity, means of the lines developed by selfing and full-sibbing were not significantly different except for yield at 99% homozygosity.

Webmost families the inbreeding depression seemed to coincide with a curve calculated on the basis of the expected loss of heterozygosity in a diploid organism. ... The success of hybridization between inbred lines in maize has led to many similar investigations with other crops. Several workers have reported inbreeding studies in cultivated ... WebAbstract. Self-fertilization (also known as selfing) is an important reproductive strategy in plants and a widely applied tool for plant genetics and plant breeding. Selfing can lead to inbreeding depression by uncovering recessive deleterious variants, unless these variants are purged by selection. Here we investigated the dynamics of purging ...

WebUnsourced material may be challenged and removed. Plant breeding in Nepal is the art and science of improving the heredity of plants for benefit of humanity in Nepal. The major crops of Nepal include rice, wheat, maize, oil seeds and grain legumes. WebApr 7, 2024 · Inbreeding Depression Dr. Kaushik Kumar Panigrahi Follow Assistant Professor-Cum-Junior Scientist at Orissa University of Agriculture and Technology Advertisement Advertisement Recommended Inbreeding & Inbreeding depression in Plants Tulshiram Rathod 22.3k views • 16 slides Presentation on Heterosis Dr. Kaushik Kumar …

WebNov 30, 2024 · Materials and Methods. The experiments to investigate inbreeding depression rates in diploid and tetraploid maize lines were conducted in 2009 (Supplementary Material 1) and 2008 (Supplementary Material 2) in Columbia, Missouri.The four diploid and tetraploid parental inbred maize lines A188 (2x, 4x), Oh43 (2x, 4x), B73 …

WebMating between closely related individuals can result in inbreeding depression, a loss of fitness ( Charlesworth and Charlesworth 1987) that can affect endangered or isolated species ( Kardos et al. 2016) and lead to the eventual extinction of small populations ( Hedrick and Garcia-Dorado 2016 ). hip strengthening exs nhsWebInbreeding depression is usually studied in organisms that can self-fertilize, such as self-compatible plants or hermaphrodite animals, because here intense inbreeding has the … homes for sale in mount savage md areaWebNov 30, 2024 · The opposite effect, inbreeding depression, results from repeated self-pollination and leads to a reduction in vigor. A popular explanation for this reaction is the … hip strengthening exercises standingWebInbreeding depression is widespread across plant and animal kingdoms and may arise from the exposure of deleterious alleles and/or loss of overdominant alleles resulting from increased homozygosity, but these genetic models cannot fully explain the … homes for sale in mount sinaiWebJan 17, 2024 · Inbreeding depression and heterosis in maize was initially documented by George H. Shull and Edward M. East [4–6]. The adoption of hybrid maize over open-pollinated varieties occurred remarkably fast due to improved yields, greater uniformity for machine harvesting, and increased durability under extreme abiotic stress. ... homes for sale in mount vernon gaWebMar 25, 2015 · Darwin was the first to recognize inbreeding depression (see Glossary) in maize, a critical component of maize breeding. He noted a reduced size in self-pollinated corn and the improved size and vigor, or heterosis, of cross-pollinated corn ( Darwin, 1876 ). hip strengthening exercises for menWebInbreeding depression seems to be present in most groups of organisms, but varies across mating systems. Hermaphroditic species often exhibit lower degrees of inbreeding … hip stress reaction vs fracture