Relationship of foliar injury, plant height and vine maturity to yield of potato clones following metribuzin application

1989 ◽  
Vol 66 (2) ◽  
pp. 83-92 ◽  
Author(s):  
Stephen L. Love ◽  
Lloyd C. Haderlie
Keyword(s):  
Plant Height ◽  
Foliar Injury ◽  
Vine Maturity ◽  
Relationship Of

Relationship of leaf parameters with genetic ozone insensitivity in selected Phaseolus vulgaris cultivars

1982 ◽  
Vol 60 (11) ◽  
pp. 2187-2191 ◽  
Author(s):  
P. Hucl ◽  
W. D. Beversdorf ◽  
B. D. McKersie
Keyword(s):  
Phaseolus Vulgaris ◽  
Stomatal Closure ◽  
Foliar Injury ◽  
Stomatal Frequency ◽  
Phaseolus Vulgaris L ◽  
Ozone Sensitivity ◽  
Primary Mechanism ◽  
Relationship Of ◽  
The Relationship ◽  
Leaf Parameters

The relationship of ozone-induced foliar injury (ozone sensitivity) with several leaf characteristics including stomatal frequency, stomatal closure in the presence of ozone (O3), and trichome densities (abaxial and adaxial) was evaluated for a diverse group of Phaseolus vulgaris L. cultivars. Differences were observed among cultivars for ozone sensitivity and leaf parameters including stomatal frequency, trichome density, and stomatal closure in the presence of O3. Although significant (P ≤ 0.05) differences among the cultivars for stomatal frequency and trichome densities existed, no consistent pattern between insensitive and sensitive cultivars was observed. Ozone-sensitive genotypes responded to 40 parts per hundred million O3 with similar or greater stomatal closure than the more insensitive genotypes, indicating that stomatal closure was not a primary mechanism for O3 insensitivity among the cultivars evaluated.

RELATIONSHIPS OF MATURITY, HEIGHT AND MORPHOLOGICAL TRAITS WITH WHOLE-PLANT YIELD AND DIGESTIBILITY OF BARLEY CULTIVARS

1987 ◽  
Vol 67 (4) ◽  
pp. 1009-1017 ◽  
Author(s):  
V. S. BARON ◽  
SOLOMON KIBITE
Keyword(s):  
Plant Height ◽  
Maximum Yield ◽  
Stepwise Multiple Regression ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Whole Plant ◽  
Days To Heading ◽  
Relationship Of ◽  
The Relationship

Eight six-rowed barley (Hordeum vulgare L.) lines were used to study the relationship of whole-plant dry matter yield (WPY), whole-plant digestible yield (WPDY) and percent in vitro organic matter digestibility (IVDOM) with plant height, maturity, grain and leaf content at the time of maximum WPY. The study was conducted at Lacombe, Alberta during 1983 and 1984. Whole-plant harvests were initiated at the 50% heading stage of individual lines and continued for seven consecutive weeks. WPY and WPDY attained maximum levels at identical harvest times after heading in all lines and years. In 1983 all lines, and in 1984, six of eight lines attained maximum WPY at the same time postheading (fourth and third harvest in 1983 and 1984, respectively). WPY and WPDY were significantly correlated with days from planting to time of maximum yield (TMY) in both years. Partial coefficients of determination from stepwise multiple regression analyses indicated that the effect of days from planting until TMY > plant height > days to heading on WPY. The effect of days from planting until TMY > plant height > IVDOM > days to heading on WPDY, and the effect leaf content was more important than any other variable on IVDOM. It was concluded that late-maturing, tall barley lines having a high leaf content were most likely to produce high WPDY and hence be advantageous for utilization as whole-plant barley forage.Key words: Barley, whole-plant, digestibility, maturity, height

Genetic variability and inter-relationship of some quantitative characters in safflower

1974 ◽  
Vol 83 (2) ◽  
pp. 197-202 ◽  
Author(s):  
M. O. Khidir
Keyword(s):  
Plant Height ◽  
Indirect Effect ◽  
Block Design ◽  
Head Width ◽  
Positive Contribution ◽  
Quantitative Characters ◽  
Randomized Block Design ◽  
Relationship Of ◽  
100 Seed Weight ◽  
Number Of Seeds

SUMMARYEighteen varieties of safflower were studied in a randomized block design with five replications. Data on fourteen quantitative characters were recorded. Appreciable variability was displayed by all characters, especially yield and number of heads/plant. The heritability estimates ranged between 65 and 98%.Seed (achene) yield gave a significant positive genotypic correlation with number of seeds/head, head width, bract width and oil content. The 100-seed weight was significantly negatively correlated with the number of seeds/head and plant height at maturity. The genotypic correlations between yield/plant and four other traits were partitioned into direct and indirect effects. The highest direct positive contribution to yield was given by plant height, which had also a positive indirect effect via number of heads. The direct effect of the number of heads/plant was negative and the indirect effect via head width was positive.

Relationship of Cassava Mosaic Severity in Planting Material to Mosaic Development, Growth and Yield of Cassava in Zaire

1987 ◽  
Vol 23 (2) ◽  
pp. 221-225 ◽  
Author(s):  
A. Muimba-Kankolongo ◽  
K. Phuti
Keyword(s):  
Plant Height ◽  
Primary Infection ◽  
Mosaic Disease ◽  
Growth And Yield ◽  
Cassava Mosaic Disease ◽  
Plant Vigour ◽  
Planting Material ◽  
Tuberous Roots ◽  
Subsequent Crop ◽  
Relationship Of

SummaryThe performance of a cassava clone susceptible to cassava mosaic disease (CMD) was tested over two successive years for CMD development, plant vigour and yield of fresh tuberous roots. Cuttings from plants with different CMD infection levels were used. There was a significant increase in mosaic incidence, severity and proportion of leaves showing symptoms of the disease in the subsequent crop as the levels of CMD primary infection in planting material increased. Plant height and stem diameter were also adversely affected and the yield of plants from severely affected cuttings was reduced by 60–70%.

scholarly journals Кореляційні зв’язки між господарсько цінними та морфологічними ознаками рижію ярого

2013 ◽  
pp. 37-41
Author(s):  
І. Б. Комарова
Keyword(s):  
Mathematical Model ◽  
Plant Height ◽  
Morphological Characteristics ◽  
Morphological Characters ◽  
Oil Yield ◽  
Morphological Parameters ◽  
False Flax ◽  
Relationship Of ◽  
The Mathematical Model ◽  
Number Of Branches

Встановлено суттєві кореляційні взаємозалежності між морфологічними ознаками рижію ярого – кількістю гілок і стручків на рослині, висотою рослини і штамбу та зв’язок господарсько цінних показників (урожайності, виходу олії, маси насіння з однієї рослини й маси 1000 насінин) зі ступенем прояву морфологічних параметрів. Урожайність і вихід олії позитивно корелюють із кількістю стручків і висотою рослини. Маса насіння з однієї рослини, що є складовою врожайності, істотно позитивно корелює із загальною кількістю стручків та гілок і негативно – з висотою штамбу. Одержано математичні моделі залежності господарсько цінних показників від морфологічних ознак. The significant correlation between the morphological characteristics of spring false flax – number of branches and pods per plant, plant height and trunk and relationship of economically valuable indicators (yield, oil yield, weight of seeds per plant and weight of 1000 seeds) with the degree of manifestation of morphological parameters were founded. Yield and oil yield were positively correlated with the number of pods and plant height. Weight of seeds per plant, which is a component of yields, significantly positively correlates with the total number of pods and branches and negatively – with height of trunk. The mathematical model on economically valuable indicators of morphological characters was received.

Relationship of concentration of gaseous hydrogen fluoride to incidence and severity of foliar lesions in black spruce and white spruce

1991 ◽  
Vol 21 (6) ◽  
pp. 756-761 ◽  
Author(s):  
D. C. McCune ◽  
T. L. Lauver ◽  
K. S. Hansen
Keyword(s):  
Hydrogen Fluoride ◽  
Black Spruce ◽  
Natural Populations ◽  
White Spruce ◽  
Gaseous Hydrogen ◽  
Foliar Injury ◽  
Field Exposure ◽  
Quantitative Estimates ◽  
Sources Of Variation ◽  
Relationship Of

Quantitative estimates of the variation in response to air pollutants in natural populations of trees must be considered in predicting the magnitude of an effect or the risk of an effect's occurrence. This subject was investigated in 2-year-old black spruce (Piceamariana (Mill.) B.S.P.) exposed for 78 continuous hours to gaseous hydrogen fluoride at concentrations of 2.3, 4.2, or 8.1 μg% F•m−3 and with 3-year-old white spruce (Piceaglauca (Moench) Voss) exposed for 50 continuous hours to hydrogen fluoride at 2.6, 5.2, or 11.1 μg F•m−3 in open-top, field exposure chambers. Tolerances to hydrogen fluoride induced foliar injury followed a lognormal distribution for black spruce and white spruce with, respectively, estimated median tolerances of 3.45 and 13.24 μg F•m−3 and standard deviations corresponding to 1.70- and 2.14-fold changes in concentration of hydrogen fluoride. The curves for the occurrence of moderate and severe degrees of injury in black spruce paralleled that for the occurrence of any hydrogen fluoride induced injury but were displaced towards greater exposures (1.29-fold for moderate and 1.77-fold for severe injury). The distribution of foliar injury on shoots indicated that a portion of the variation in tolerance might be attributed to phenologic differences among the trees. A knowledge of the sources of variation and their magnitudes is necessary to recognize both incidence and severity of pollutant-induced injury in dose-response relationships.

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