073 Stomatal Density as a Correlated Trait to Postharvest Longevity in Antirrhinum majus L. (Snapdragon)

Stomatal density is being investigated as a highly correlated trait to postharvest longevity (PHL) and subsequently may be used for selection in early generations of breeding germplasm. To this end, leaf imprints were created from Antirrhinum majus L. (snapdragon) P1, P2, F1, BC1 (F1×P1), BC2 (F1×P2), F2, and F3 plants and evaluated for stomatal densities. Cut flowers of P1, P2, F1, BC1 (F1×P1), BC2 (F1×P2), and F3 were harvested after the first five flowers opened and evaluated for PHL. Additionally, cut flowers from these lines were evaluated for leaf surface area. Populations for evaluation were grown in the greenhouse in winter and spring 1999-2000 in a randomized complete-block design according to standard forcing procedures. Twenty-five cut flowering stems of each genotype were held in the laboratory in deionized water under continuous fluorescent lighting at 22 °C for PHL assessment. The end of PHL was defined as 50% of the flowers drying, browning, or wilting. Data will be presented on the correlation between stomatal density and PHL.

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080 Postharvest Longevity Analysis of Advance Generations in Antirrhinum majus L.

HortScience ◽

10.21273/hortsci.34.3.455a ◽

1999 ◽

Vol 34 (3) ◽

pp. 455A-455

Author(s):

William J. Martin ◽

Dennis P. Stimart

Keyword(s):

Block Design ◽

Deionized Water ◽

Antirrhinum Majus ◽

Cut Flowers ◽

Randomized Complete Block Design ◽

Postharvest Life ◽

Postharvest Longevity ◽

Fluorescent Lighting

Cut flowers of Antirrhinum majus L. (snapdragon) P1, P2, F1, F3, and F2 × F2 plants were harvested after the first five flowers were open and were evaluated for postharvest longevity to further evaluate genes conditioning postharvest longevity. F3 progeny evaluated were derived by selfing F2 selections of long keeping, mid-range, and short keeping types. F2 × F2 progeny evaluated were derived from crosses within and between postharvest longevity categories. Populations for evaluation were grown in the greenhouse in winter 1998-1999 in a randomized complete-block design according to standard forcing procedures. Thirty plants of each genotype were held in the laboratory in deionized water under continuous fluorescent lighting at 22 °C for postharvest assessment. The end of postharvest life was defined as 50% of the flowers drying, browning, or wilting. Data will be presented on postharvest longevity and allelic relationships within populations.

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Comparison of Stomatal Density and Postharvest Transpiration between Long- and Short-lived Cut Flower Genotypes of Antirrhinum majus L.

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.130.5.742 ◽

2005 ◽

Vol 130 (5) ◽

pp. 742-746 ◽

Cited By ~ 3

Author(s):

Kenneth R. Schroeder ◽

Dennis P. Stimart

Keyword(s):

Water Loss ◽

Stomatal Density ◽

Indirect Selection ◽

Selection Method ◽

Fourth Quarter ◽

Antirrhinum Majus ◽

Cut Flower ◽

Cut Flowers ◽

Weight Losses ◽

Postharvest Longevity

Evaluation of leaf stomatal numbers and postharvest water loss indicate these are important factors in Antirrhinum majus (snapdragon) cut flower postharvest longevity (PHL). Cut flowers with 9 days longer PHL had 53% fewer leaf stomata. Long PHL is associated with an early reduction in transpiration followed by low steady transpiration. Short-lived genotypes had a linear transpiration pattern over the period of PHL indicating poor stomatal control of water loss. Short-lived genotypes had 22% to 33% reductions in fourth quarter transpiration while long-lived genotypes had 2% to 8% reductions. In addition, short-lived genotypes had higher average fourth quarter cut flower weight losses compared to long-lived genotypes. Further investigation of stomatal numbers and functioning relative to PHL may provide breeders a rapid and nondestructive indirect selection method for PHL.

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842 PB 482 INFLUENCE OF STOMATA AND TRANSPIRATION ON ANTIRRHINUM MAJUS L. POSTHARVEST LONGEVITY

HortScience ◽

10.21273/hortsci.29.5.554a ◽

1994 ◽

Vol 29 (5) ◽

pp. 554a-554

Author(s):

Susan M. Stieve ◽

Dennis P. Stimart

Keyword(s):

Steady State ◽

Statistical Analysis ◽

Transpiration Rate ◽

Leaf Surface ◽

Antirrhinum Majus ◽

Distilled Water ◽

Stomatal Size ◽

Adaxial Leaf Surface ◽

Postharvest Longevity ◽

Leaf Impressions

Eighteen commercially used white Antirrhinum majus (snapdragon) inbreds, a hybrid of Inbred 1 × Inbred 18 (Hybrid 1) and an F2 population (F2) of Hybrid 1 were evaluated for stomatal size and density and transpiration rate to determine their affect on postharvest longevity. Stems of each genotype were cut to 40 cm, placed in distilled water and discarded when 50% of florets wilted or browned. Postharvest longevity of inbreds ranged from 3.7 to 12.9 days; Hybrid 1 and the F2 averaged 3.0 and 9.1 days postharvest, respectively. Leaf impressions showed less than 3% of stomata were found on the adaxial leaf surface. Inbred abaxial stomatal densities ranged from 128.2 to 300.7 stomata mm-2; Hybrid 1 and the F2 averaged 155 and 197 stomata mm-2, respectively. Transpiration measurments on leaves of stems 24 hr after cutting were made with a LI-COR 1600 Steady State Porometer. Statistical analysis showed inbreds were significantly different based on postharvest longevity, stomatal size and density and transpiration of cut stems.

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Stomatal Density in Antirrhinum majus L.: Inheritance and Trends with Development

HortScience ◽

10.21273/hortsci.40.5.1252 ◽

2005 ◽

Vol 40 (5) ◽

pp. 1252-1258 ◽

Cited By ~ 7

Author(s):

William J. Martin ◽

Dennis P. Stimart

Keyword(s):

Plant Development ◽

Stomatal Density ◽

Antirrhinum Majus ◽

Stomatal Index ◽

Narrow Sense ◽

Single Seed Descent ◽

Early Generation ◽

Postharvest Longevity ◽

Advanced Generation ◽

Over Time

Stomatal density during plant development and inheritance of the trait were investigated with the goal of utilizing stomatal density as a correlated trait to cutflower postharvest longevity in Antirrhinum majus L. Inbred P1 (stomatal index = 0.2) was hybridized to inbred P2 (stomatal index = 0.3) to produce F1 (P1 × P2), which was backcrossed to each parent producing BCP1 (F1 × P1) and BCP2 (F1 × P2). P1, P2, F1, BCP1, and BCP2 were used to examine changes in stomatal density with plant development and early generation inheritance. An F2 (F1 self-pollinated), and F3, F4, and F5 families, derived by self-pollination and single seed descent, were used to obtain information on advanced generation inheritance. Stomatal density was stable over time and with development of leaves at individual nodes after seedlings reached two weeks of age. Therefore, stomatal density can be evaluated after two weeks of plant development from a leaf at any node. Stomatal density is quantitatively inherited with narrow sense heritabilities of h2F2:F3 = 0.47 to 0.49, h2F3:F4 = 0.37 ± 0.06 to 0.60 ± 0.07, and h2F4:F5 = 0.47 ± 0.07 to 0.50 ± 0.07.

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An Evaluation of Some Japanese Lisianthus (Eustoma grandiflorum) Varieties Grown in Bangladesh

The Agriculturists ◽

10.3329/agric.v11i1.15243 ◽

2013 ◽

Vol 11 (1) ◽

pp. 56-60 ◽

Cited By ~ 1

Author(s):

AFM Jamal Uddin ◽

MS Islam ◽

H Mehraj ◽

MZK Roni ◽

S Shahrin

Keyword(s):

Shelf Life ◽

Normal Condition ◽

Block Design ◽

Pot Experiment ◽

Cut Flowers ◽

Eustoma Grandiflorum ◽

Commercial Cultivation ◽

Randomized Complete Block Design ◽

Commercial Cultivars ◽

First Time

A pot experiment was conducted for the first time in Bangladesh, at the Horticulture Farm of Sher-e- Bangla Agricultural University, Dhaka during November, 2010 to July, 2011 to asses the adaptability of seven lisianthus (Eustoma grandiflorum) cultivars namely Micky Rose, Pink Rose, Azuma No Yosooi, Purple Edge Glass, Piccolo Blue, Mellow Purple and Royal Violet for commercial cultivation in Bangladesh. The experiment was conducted in a Randomized Complete Block Design with nine replications. Significant differences among cultivars were noted for all the attributes evaluated. The highest number of flowers (16.0/plant) was produced by Piccolo Blue and the lowest from Pink Rose (7.0/plant). All the cultivars in this study showed very good shelf life (12.0-25.0days) in normal condition. All the seven lisianthus cultivars performed satisfactorily as ideal cut flowers. Further work may be done to develop these as commercial cultivars in Bangladesh. DOI: http://dx.doi.org/10.3329/agric.v11i1.15243 The Agriculturists 2013; 11(1) 56-60

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Methods of adaptability and stability applied to eucalyptus breeding

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2018000100006 ◽

2018 ◽

Vol 53 (1) ◽

pp. 53-62

Author(s):

Osmarino Pires dos Santos ◽

Ivan Ricardo Carvalho ◽

Maicon Nardino ◽

Tiago Olivoto ◽

Alan Junior de Pelegrin ◽

...

Keyword(s):

Factor Analysis ◽

Field Experiments ◽

Block Design ◽

Genetic Breeding ◽

Breast Height ◽

Randomized Complete Block Design ◽

Productive Potential ◽

The Mean ◽

Highly Correlated

Abstract: The objective of this work was to evaluate the consistency of the methods of Annicchiarico, Lin & Binns, Wricke, and factor analysis in identifying eucalyptus clones with stability, adaptability, and high productive potential. Eight-four clones, with three years of age, from the genetic breeding program of the company CMPC Celulose Riograndense were used. Three field experiments were carried out in a randomized complete block design, in an 84x3 factorial arragement, with 20 replicates of one plant per plot. The clones were evaluated as to diameter at breast height, plant height, and volume of wood. The methods of Annicchiarico and Lin & Binns are highly correlated with each other, and their use together with the method of Wricke is a sound strategy for the evaluation of eucalyptus clones. The factor analysis identified broadly adaptable clones, and some of them were the same ones identified by the methods of Annicchiarico and Lin & Binns. The use of the mean classification of the clones, along with the factor analysis, is efficient to identify the most adapted, stable, and productive ones among a high number of genotypes.

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The Relation Between Leaf Production and Wood Weight in First-Year Root Sprouts of Two Populus Clones

Canadian Journal of Forest Research ◽

10.1139/x72-020 ◽

1972 ◽

Vol 2 (2) ◽

pp. 98-104 ◽

Cited By ~ 20

Author(s):

Philip R. Larson ◽

J. G. Isebrands

Keyword(s):

Leaf Area ◽

Leaf Surface ◽

Dry Weight ◽

First Year ◽

Leaf Production ◽

Leaf Surface Area ◽

Highly Correlated ◽

The Relationship ◽

Non Destructive ◽

Leaf Dry Weight

The relationship between leaf production and wood production in two clones of Populus grown for 1 year under intensive culture was investigated. Wood weight at any one stem position was highly correlated with the cumulative leaf area above that position. About one-half the total stem weight was bark, but the bark/wood ratio decreased with increasing leaf area. Wood specific gravity in creased from stem top to stem base, with mid-stem values of about 0.35. Leaf surface area and leaf dry weight were highly correlated with leaf lamina length; the latter therefore provides an easily measured, non-destructive estimate of photosynthesizing leaf surface. Marked clonal differences existed in all parameters measured.

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Energy utilization and growth performance of broilers receiving diets supplemented with enzymes containing carbohydrase or phytase activity individually or in combination

British Journal Of Nutrition ◽

10.1017/s0007114507815807 ◽

2008 ◽

Vol 99 (3) ◽

pp. 682-690 ◽

Cited By ~ 42

Author(s):

Oluyinka A. Olukosi ◽

Aaron J. Cowieson ◽

Olayiwola Adeola

Keyword(s):

Block Design ◽

Positive Control ◽

Negative Control ◽

Metabolizable Energy ◽

Energy Utilization ◽

Performance Criteria ◽

Net Energy ◽

Nutrient Requirements ◽

Randomized Complete Block Design ◽

Highly Correlated

Energy utilization in broilers as influenced by supplementation of enzymes containing phytase or carbohydrase activities was investigated. Day-old male broilers (480) were allocated to four slaughter groups, thirty broilers in the initial slaughter group and 150 broilers in each of the final slaughter groups on days 7, 14 and 21. Broilers in each of the final slaughter groups were allocated to five treatments in a randomized complete block design, each treatment had six replicate cages of five broilers per replicate cage. The diets were maize–soyabean based with wheat as a source of NSP. The treatments were: (1) positive control that met nutrient requirements of the day-old broiler chick; (2) negative control (NC) deficient in metabolizable energy and P; (3) NC plus phytase added at 1000 FTU/kg; (4) NC plus cocktail of xylanase, amylase and protease (XAP); and (5) NC plus phytase and XAP. Gain and gain:food were depressed (P < 0·05) in the NC diet. Phytase improved (P < 0·05) gain at all ages and gain:food at days 0–14 and days 0–21. There was improvement (P < 0·01) in net energy for production, energy retained as fat and protein from days 0 to 14 and from days 0 to 21 in phytase-supplemented diet compared with the NC diet. Net energy for production was more highly correlated with performance criteria than metabolizable energy and may be a more sensitive energy utilization response criterion to use in evaluating broiler response to enzyme supplementation.

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Postharvest Longevity of Antirrhinum majus L. Cut Flowers as Influenced by Backcrosses to a Short-lived Recurrent Parent and Harvest Time

HortScience ◽

10.21273/hortsci.31.4.570d ◽

1996 ◽

Vol 31 (4) ◽

pp. 570d-570

Author(s):

Kenneth R. Schroeder ◽

Dennis P. Stimart

Keyword(s):

Inbred Line ◽

Antirrhinum Majus ◽

Fluorescent Light ◽

Recurrent Parent ◽

Harvest Time ◽

Cut Flowers ◽

Single Seed Descent ◽

Harvest Dates ◽

Flower Stem ◽

Postharvest Longevity

An inbred backcrossing approach was taken to transfer long postharvest keeping time of cut flowers from a white inbred line of Antirrhinum majus L. into a yellow short-lived inbred line. Three backcrosses to the short-lived recurrent parent were done followed by three generations of selfing by single-seed descent. Plants from 56 accessions of BC1S3 through BC3S3 were grown twice (June and August 1995) in a greenhouse and flower stems harvested for postharvest longevity evaluation. Postharvest evaluation was done in deionized water under continuous fluorescent light. Longevity was determined as the number of days from cutting to discard when 50% of the open florets on a flower stem wilted or turned brown. One yellow accession was retrieved that was not significantly different in postharvest longevity from the white long-lived parent. Environment substantially influenced postharvest longevity over harvest dates. Possible causes for variation of postharvest keeping time will be presented.

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Cultivation and Propagation of Iris laevigata Fisch., an Endangered Ethno-medicinal Plant of Imphal Valley Manipur, India

Journal of Agricultural Science ◽

10.5539/jas.v13n5p153 ◽

2021 ◽

Vol 13 (5) ◽

pp. 153

Author(s):

S. Sanjay Singh ◽

Rocky Thokchom ◽

Jenita Thokchom ◽

Soumitra Sankar Das ◽

Arvind S. Dhabe ◽

...

Keyword(s):

Growth And Development ◽

Leaf Surface ◽

Growth Parameters ◽

Block Design ◽

Strong Positive Correlation ◽

Eastern India ◽

Randomized Block Design ◽

North Eastern ◽

Leaf Surface Area ◽

Conservation Method

Iris laevigata Fisch., is restricted geographically in Manipur, north eastern India. An experiment was planned with Factorial Randomized Block Design during 2018 to 2020 (3 seasons) in the study plots of ICAR Research Complex for NEH Region, Manipur Centre, Lamphelpat. The study encompasses on the growth and development of I. laevigata seedlings collected from Ipa Thoukok Complex: influenced by spacing, trimming and correlations amongst the growth parameters, so as to validate the most favourable conservation method for this endangered plant. Among the treatments, T6 = S2T3 (45 cm × trimming 40 DAT) was found the best treatment. T9 = S3T3 (60 cm × trimming 40 DAT) was second, T3 = S1T3 (30 cm × trimming 40 DAT) was the third and lowest was found in case of T1 = S1T1 (30 cm × 0 trimming, i.e., without trimming). Strong positive correlation between leaf surface area and plant height on the growth and development was found to be effective among other correlations.

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