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Showing 1 to 20 of 64 for “"harvest index"”.

  1. Evaluating three potential sources of germplasm to improve growth rate, grain yield, and harvest index in pearl millet

    Bramel-Cox, Paula1985

    <p>Sixteen genotypes of pearl millet representing adapted and unadapted cultivars and hybrids and weedy and wild accessions were evaluated for growth patterns and for their potential for improving grain yield, growth rate, and several other traits in the crop. Progeny from matings of two adapted …

    iastate Repository record

  2. Genetic and Environmental Responses of Harvest Index and Other Agronomic Traits in Winter Wheat (Triticum Aestivum L.) and Spring Oats (Avena Sativa L.)

    Howey, Arden EugeneUniversity of Illinois at Urbana-Champaign2014

    … of several agronomic traits, especially harvest index, total dry matter production, and growth rate, for improving grain yield. The effect of four nitrogen fertilizer treatments on harvest index, grain yield, grain protein percentage, grain protein yield, and total dry matter yield of …

    uiuc Repository record

  3. Plant to plant variation in harvest index in lentil (Lens culinaris L.) : A dissertation submitted in partial fulfilment of the requirements for the Diploma of Agricultural Science in the University of Canterbury New Zealand

    Kirthisinghe, Jayath P.Lincoln College, University of Canterbury1986

    … study was carried out to assess variation in the harvest index and yield components of lentils (Lens culinaris cv. Titore). Four levels of irrigation were imposed on the lentils. One trial was sown in autumn and the other in spring. The variation in the harvest index in response to sowing date and …

    lincoln Repository record

  4. Produção de mandioca (Manihot esculenta Cranz) sob dois sistemas de plantio

    ALCANTARA, Felipe Leal M de2014

    … diameter and number of roots per plant and harvest index; Cedinha that variety was better than Pão do Chile in plant height and number of roots per plant, while the variety of Pão do Chile was better in root diameter and harvest index and both varieties showed a good harvest index (above …

    brazil-ufpb Repository record

  5. Yield Improvement in Eastern Soft Red Winter Wheat from 1919 to 2009

    Green, Andrew JustinVirginia Tech2011

    … weight, spikes m-2, lodging, flowering date and harvest index collectively explained the most yield variation in multiple environments on the basis of linear regression analysis. Rate of genetic yield improvement ranged from 0.56% yr-1 at Holland in 2011 to 1.4% yr-1 at Blacksburg in 2011. For …

    vt Repository record

  6. PARENT SELECTION IN TOMATO BASED ON MORPHO-PHYSIOLOGICAL TRAITS

    COURTNEY, WILLIAM HENRY, III.

    … with yield and fruit number but not with harvest index, photosynthesis, specific leaf weight, or average fruit size. Among indeterminates, general combining ability for yield is significantly correlated only with yield.</p><p>Regression analysis indicates that inbred yield is the best …

    unh-thes Repository record

  7. Agronomic, quality, and genetic analysis of the Rht18 semi-dwarfing gene in a Canadian Western Red Spring Wheat (Triticum aestivum L.) background

    Tetland, Sara 1992-University of Saskatchewan2021

    … resulted in reduced stem lodging, increased harvest index, and in some areas, improved yields. The Rht18 gene is known to reduce height in wheat, but there are currently no commercial varieties in Western Canada that contain this gene. In Western Canada the two main sources of dwarfing in …

    sask Repository record

  8. Canopy Architecture and Plant Density Effect in Short-Season Chickpea (Cicer arietinum L.)

    Vanderpuye, Archibald W.University of Saskatchewan2010

    … interception, biomass, growth rate, seed yield, harvest index, ascochyta blight severity and radiation- and water use efficiencies. The plant density which produced the highest seed yield when averaged over years for each location for each treatment revealed that a plant density of at least 55 …

    sask Repository record

  9. Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency

    Mushekwa, Sakumona2012

    … height, thousand kernel weight, grains per ear, harvest index, spikes per ear, days to 50 % flowering and leaf rolling were assessed and analysed. Correlation and stepwise multiple regression analyses were done to study the parameter relationship. The results revealed that there were highly …

    zimbabwe Repository record

  10. Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency

    Mushekwa, Sakumona2012

    … height, thousand kernel weight, grains per ear, harvest index, spikes per ear, days to 50 % flowering and leaf rolling were assessed and analysed. Correlation and stepwise multiple regression analyses were done to study the parameter relationship. The results revealed that there were highly …

    zambia Repository record

  11. Effects of panicle removal and nitrogen on yield of grain sorghum

    Legwaila, Gabatshele MbonaVirginia Tech1993

    … more assimilates in vegetative material (harvest index = 0.15), while Segaolane and NK 2660 partitioned more photosynthates into grain yield (harvest index = 0.5). Nitrogen application increased total dry matter, tillers, grain yield, and number of kernels in each variety except that …

    vt Repository record

  12. AGRONOMIC AND PHYSIOLOGICAL CHARACTERS OF PEARL MILLET (PENNISETUM AMERICANUM L. K. SCHUM) GROWN UNDER A SPRINKLER IRRIGATION GRADIENT (DROUGHT, STRESS, INDEX).

    IBRAHIM, YASSIN MOHMED.The University of Arizona.1984

    … were evaluated at the end of the experiment. Harvest Index, drought tolerance index, and water use efficiency (WUE) were calculated. Percent crude protein of seeds was analyzed, and photosynthesis was measured in 1984 only. Regression analysis was used to compare the performance of the …

    arizona-thes Repository record

  13. Phenology, canopy development, biomass and grain yield of annual canarygrass (Phalaris canariensis L.)

    Xyntaris, KonstantinosUniversity of Saskatchewan2018

    … variation was best explained by changes in the harvest index. Likely, the canaryseed delayed phenological development negatively affected harvest indices with late seeding. The wheat and oat cultivar, which reached anthesis earlier had lower reductions in harvest index and grain yield. …

    sask Repository record

  14. Genetic diversity of midwestern oat germplasm

    Cowen, Neil1985

    … for bundle weight, grain yield, straw yield, harvest index, height, and heading date in two experiments. Number of transgressive segregates per trait and generalized genetic variance were calculated for each mating. Four measures of genetic distance between the parents were calculated: …

    iastate Repository record

  15. The agronomic and economic performance of flax in Iowa

    Gailans, Stefans2010

    … investigated were seed yield, straw yield, harvest index, oil concentration of flaxseed, and the linoleic acid and linolenic acid concentrations of flaxseed oil. The experiment was conducted in central Iowa in 2007 and 2008, on land previously sown to either soybean [Glycine max (L.) Merr.] …

    iastate Repository record

  16. A comparative analysis of the reproductive efficiency of 14 Virginia market type peanut cultivars (Arachis hypogaea L.)

    Seaton, Maurice L.Virginia Polytechnic Institute and State University1986

    … methods used to measure RE were (1) MPDW/PLDW (Harvest Index), (2) MPT/FT, (3) PDT/FT, (4) PGT + PDT/FT and (5) ST/(2*FT). The results indicate that the five most recently released cultivars produced more plowers, 10% more mature pods, 9.7% more mature seeds, and 11% more plant dry weight than …

    vt Repository record

  17. Introgression of desirable traits from temperate maize Zea mays L.)into tropical maize for low phosphorus soils

    Daka, Lovemore2014

    … among genotypes were found for grain yield (GY), harvest index (HI), 100 grain weight (100GW), shelling %, root biomass (RB), plant height (PH), plant biomass (PB), plant-tissue phosphorus (PTP) and purpling symptom suggesting the presence of genetic variation in maize under low phosphorus soil …

    zimbabwe Repository record

  18. Introgression of desirable traits from temperate maize Zea mays L.)into tropical maize for low phosphorus soils

    Daka, Lovemore2014

    … among genotypes were found for grain yield (GY), harvest index (HI), 100 grain weight (100GW), shelling %, root biomass (RB), plant height (PH), plant biomass (PB), plant-tissue phosphorus (PTP) and purpling symptom suggesting the presence of genetic variation in maize under low phosphorus soil …

    zambia Repository record

  19. Evaluation of water use efficiency in upland Rice (Oryza sativa L) Under deficit irrigation)

    Mbita, NakapiteUniversity of Zambia2019

    … at the start of the reproductive stage till harvest. Observations made on growth parameters were namely: tiller number, plant height, the number of panicles, aboveground biomass, 1000 grain weight, grain yield, and harvest index (HI). Other parameters included crop consumptive water use …

    zimbabwe Repository record

  20. Evaluation of water use efficiency in upland Rice (Oryza sativa L) Under deficit irrigation)

    Mbita, NakapiteUniversity of Zambia2019

    … at the start of the reproductive stage till harvest. Observations made on growth parameters were namely: tiller number, plant height, the number of panicles, aboveground biomass, 1000 grain weight, grain yield, and harvest index (HI). Other parameters included crop consumptive water use …

    zambia Repository record

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