搜索结果: 1-15 共查到“农学 longevity”相关记录18条 . 查询时间(0.109 秒)
Genetic evaluation for functional longevity in Polish Simmental cattle
cattle Polish Simmentals productive life Weibull proportional hazards model
2017/6/22
The Weibull proportional hazards model was applied for genetic evaluation of functional longevity in Polish Simmentals. Data consisted of production and disposal records for 12 527 Simmental cows, dau...
Genetic relationship of functional longevity with female fertility and milk production traits in Czech Holsteins
Holstein cattle genetic parameters milk yield functional traits
2015/6/24
The objectives of this study were to estimate heritabilities of and genetic correlations among longevity, milk production, and female fertility traits of Holstein cows. Fertility traits were days open...
Analysis of longevity in the Slovak Pinzgau population – extension to the animal model
Pinzgau cattle survival analysis breeding value genetic variability reliability heritability
2015/6/24
Breeding values for length of productive life in Slovak Pinzgau cattle were estimated using survival analysis. As the results were corrected for milk production, the final breeding values represented ...
Effect of age at first calving on longevity and fertility traits for Holstein cattle
functional traits survival analysis linear model cattle
2015/6/24
Effects of age at first calving (AFC) on functional longevity of Czech Holstein cows and their reproduction traits in the first lactation were analyzed using the first lactation data of 605 538 Holste...
Relationships between conformation traits and longevity of Holstein cows in the Czech Republic
Holstein cows longevity type traits correlations
2015/6/2
The relationships between conformation traits and longevity traits were analyzed in 41 489 Holstein cows born in the years 1994–1999 which were culled by 30th June 2005. Pearson correlation coefficien...
Needle longevity as a criterion of response to a climatic fluctuation (so called heat wave) in Scots pine populations at early phases of ontogeny
Scots pine Pinus sylvestris number of needle age classes needle retention climatic episode of heat wave
2015/4/14
The paper presents results of an assessment of needle age classes in Scots pine partial populations in the period of three and five years after outplanting in a lowland site in relation to conditions ...
Post-harvest longevity of leaves of the sea lavender (Limonium latifolium (Sm.) Kuntze) after application of growth regulators
fl orists’ greens vase live index of leaf greenness
2015/3/19
Conditioning is a simple and eff ective method of post-harvest longevity of both fl owers and fl orists’ greens. Performing this treatment immediately after harvest by the producer i...
Effect of Temperature on the Developmental Rate, Longevity and Parasitism of Aphidius ervi Haliday (Hymenoptera: Aphidiidae)
Aphidius ervi development time parasitism
2015/3/2
Temperature-dependent development, longevity and parasitism of the parasitoid Aphidius ervi Haliday was
measured at four constant temperatures between 15°C and 30°C using Aphis pomi de Geer as host....
Factor Analysis of Linear Type Traits and Their Relation with Longevity in Brazilian Holstein Cattle
Autovalues Final Score Milk Production Linear Regression Longevity, Holstein
2016/5/16
In this study we aimed to evaluate the reduction in dimensionality of 20 linear type traits and more final score in 14,943 Holstein cows in Brazil using factor analysis, and indicate their relationshi...
Easy Evaluation of Longevity and Ethylene Sensitivity in Spray-Type Carnation Flowers
Easy Evaluation Longevity Ethylene Sensitivity Spray-Type Carnation
2009/7/10
To more easily evaluate longevity and ethylene sensitivity in spray-type carnation flowers, the following evaluation methods were investigated. Though the vase life was negatively correlated with room...
Rate of Acceptance and Longevity of Pulses and Wheat Cultivars in Hokkaido
Wheat Longevity Equilibrium level Cultivar Acceptance rate Pulses Logistic curve
2009/7/9
A considerable amount of information on the procedure of crop breeding and characteristics of cultivars developed has been published, but very little information is available about the process of dif...
Structure and Physical Characteristics of Shell of Groundnut Pod, with Reference to Longevity of Seed-In-Shell
Arachis hypogaea Longevity of seed-in-shell Physical characteristics of shell Structure of shell
2009/7/8
The viability of the seed-in-shell of groundnut is longer in small-seeded cultivars, and the role of the shell in the viability of the seed of groundnut was examined. Exocarp, mesocarp with vascular ...
The Possible Relationship between Ethylene and Polyamine Metabolism during the Flower Opening and Senescence,and their Effect on Flower Longevity in Hibiscus syriacus L.
1-aminocyclopropane-1-carboxylic acid aminoethoxyvinylglycine methylglyoxal-bis (guanylhydrazone) S-adenosylmethionine spermine
2009/7/8
In the higher plants, S-adenosylmethionine (SAM) synthesized from methionine serves as a common substrate for the biosynthesis of ethylene and polyamine. To clarify the relationship of ethylene and po...
Genetic Variation in the Longevity, Ethylene Production and Ethylene Sensitivity of Flowers among Pot Carnation Cultivars
autocatalytic ethylene production flower senescence flower vase life polyploidy
2010/11/23
We investigated longevity, ethylene production and ethylene sensitivity of flowers among 42 pot carnation cultivars. Our results indicate that there was a large genetic variability in flower longevity...
Longevity of maize（Zea mays L.）seeds during low input storage under ambient conditions of southwestern Nigeria
Probit analysis Seed conservation Tropical seed storage
2009/2/19
Seed longevity of two commercial hybrid maize (Zea mays L.) varieties (‘Oba-Super’ and ‘Suwan-1’) were evaluated under simulated low-input seed storage systems typical of the tropics. Saturated salt...