Results 261 to 270 of about 778,102 (310)

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito   +14 more
wiley   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang   +10 more
wiley   +1 more source

The utility of covariance of combining ability in plant breeding

open access: yesTheoretical and Applied Genetics, 1976
The definition of covariances of half- and full sibs, and hence that of variances of general and specific combining ability with regard to a quantitative character, is extended to take into account the respective covariances between a pair of characters.
Arunachalam , V.
openaire   +3 more sources

Combining Ability in Almond

Plant Breeding, 1994
Abstract2483 almond seedlings developed from 42 crosses between 12 parents were studied for three years (1989, 1990 and 1991). General and specific combining ability was determined for six traits (all years) and eight traits (1989 only). Additive factors are largely responsible for the genetic control of all traits, non‐additive factors being of ...
Garcia, J.E.   +2 more
openaire   +2 more sources

Heterosis and combining ability effects on cotton. I. Combining ability

Australian Journal of Agricultural Research, 1988
Combining ability for a number of yield and quality attributes of cultivated cotton (Gossypium) was studied in two diallel experiments under high-yielding conditions in northern Australia. The first diallel comprised nine G. hirsutum parents of North American and African origin, the second diallel of thirteen parents besides American and African ...
NJ Thomson, DJ Luckett
openaire   +1 more source

Combining ability studies in tropical sorghum (Sorghum bicolor (L.) Moench) [PDF]

open access: yesField Crops Research, 2004
Sorghum varieties grown in West Africa usually have low production potential. Information on combining ability of diverse open-pollinated cultivars and gene pools is needed for efficient choice of breeding methods and parental materials to use in ...
Alabi, S O, Kenga, R, Gupta, S C
exaly   +1 more source

THE COMBINING ABILITY IN CASTOR

Madras Agricultural Journal, 1995
Combining ability of the three pistillate lines and eight testers was assessed by Line x .ester analysis. The variance components due to sea were higher than gca for five characters except for number of nodes upto the main spike indicating the predominance of non- additive gene action.
VINDHIYAVARMAN P, GANESAN K
openaire   +1 more source

Combining Ability in Sorghum

Madras Agricultural Journal, 1979
The nature and magnitude of combining ability effects in 36 crosses of Sorghum involving two male sterile lines with 18 pollinators were studied in respect of yield per plant and other yield contributing charecters. The estimate of variance due to g.c.a.
SRIVASTAVA A.N   +3 more
openaire   +1 more source

Combining ability in pigeonpea

Madras Agricultural Journal, 2000
Using combining ability studies line x tester analysis in pigeonpea revealed non-additive gene action for the expression of days to first flowering, days to 50 per cent flowering, number of branches per plant, plant height, number of pods per plant, days to maturity, number of seeds per pod and additive gene action for seed yield. Parents MS Prabhat DT
JAYAMALA P, RATHNASAMY R
openaire   +1 more source

Home - About - Disclaimer - Privacy