scholarly journals Flower phenology as a disruptor of the fruiting dynamics in temperate oak species

2019 ◽  
Vol 225 (3) ◽  
pp. 1181-1192 ◽  
Author(s):  
Éliane Schermer ◽  
Marie‐Claude Bel‐Venner ◽  
Jean‐Michel Gaillard ◽  
Stéphane Dray ◽  
Vincent Boulanger ◽  
...  
Keyword(s):  
Flower Phenology

Flower phenology and climate data for Artemisia tridentata populations

2017 ◽  
Author(s):  
Bryce A. Richardson ◽  
Linsay Chaney ◽  
Nancy L. Shaw ◽  
Shannon M. Still
Keyword(s):  
Artemisia Tridentata ◽  
Climate Data ◽  
Flower Phenology

scholarly journals The Importance of Flower Phenology in Seed Orchard Designs

1980 ◽  
Vol 56 (5) ◽  
pp. 241-242 ◽  
Author(s):  
Anita Fashler ◽  
Oscar Sziklai
Keyword(s):  
Seed Orchard ◽  
Flower Phenology

The biology of Canadian weeds. 105. Linaria vulgaris Mill.

1995 ◽  
Vol 75 (2) ◽  
pp. 525-537 ◽  
Author(s):  
Marc A. Saner ◽  
David R. Clements ◽  
Michael R. Hall ◽  
Douglas J. Doohan ◽  
Clifford W. Crompton
Keyword(s):  
Biological Control ◽  
Vegetative Reproduction ◽  
Cultural Control ◽  
Control Methods ◽  
Weed Biology ◽  
Linaria Vulgaris ◽  
The Past ◽  
Production Growth ◽  
Flower Phenology ◽  
Root Buds

Yellow toadflax, Linaria vulgaris Mill. (Scrophulariaceae), is a weed of rangelands and agricultural crops. Introduced from Eurasia into North America more than 300 yr ago, it is now naturalized in all provinces and territories up to 60° northern latitude and beyond 2000 m altitude. It became a concern in the middle of this century when it invaded the prairies. Its seriousness as a weed declined in the late 1950s, possibly as a result of biological control. Concern has been renewed recently because the adoption of minimum tillage techniques could lead to greater abundance. Reproduction is vigourous by means of adventitious root buds and by high seed production. Growth forms, vegetative reproduction, flower phenology, and germination are variable. The capability for regrowth from root parts makes L. vulgaris a difficult weed to eradicate and limits the efficacy of cultural control methods. The possibilities for chemical control are limited due to resistance to common herbicides. Biological control projects conducted during the past 50 yr have been partly successful and are on-going. Key words:Linaria vulgaris, toadflax, Scrophulariaceae, weed biology, control, review

scholarly journals Characterization of Some Self-compatible Almonds. II. Flower Phenology and Morphology

HortScience ◽  
1995 ◽  
Vol 30 (2) ◽  
pp. 321-324 ◽  
Author(s):  
D. Bernad ◽  
_ _
Keyword(s):  
Normal Distribution ◽  
Fruit Set ◽  
Breeding Program ◽  
Prunus Amygdalus ◽  
Bloom Period ◽  
Pollinating Insects ◽  
Flower Quality ◽  
Flower Phenology

Bloom evolution and flower quality were studied in 10 almond [Prunus amygdalus Batsch syn. P. dulcis (Mill.) D.A. Webb] selections of the Zaragoza breeding program. The opening of individual flowers followed a normal distribution, with deviations reflecting temperature differences during the bloom period. The first open flowers are of better quality than later ones and may contribute more to fruit set. The relative stigma–anther position reflected the possibility of natural autogamy in three of the 10 selections. Natural autogamy might allow single-cultivar orchards without the need for pollinating insects.

Easier Pollination of Half-Diallel Crosses by Ranking Flower Phenology

1977 ◽  
Vol 1 (4) ◽  
pp. 16-16
Author(s):  
Earl R. Sluder
Keyword(s):  
Flowering Time ◽  
Ranking Method ◽  
Progeny Testing ◽  
Easy Method ◽  
Current Season ◽  
Diallel Crosses ◽  
Diallel Crossing ◽  
Flower Phenology ◽  
Half Diallel

Abstract Progeny testing using half-diallel crossing is often difficult because of the variation in flowering time among selected parents. The flower phenology ranking method described here is an easy method of pollinating half-diallel crosses using current season pollen. Parents are ranked according to their flowering time and crosses are arranged in such a way that each parent is pollinated only by a parent which flowered before it. The earliest flowering parent is used only as a male and the latest-flowering parent only as a female.

Responses of flower phenology and seed production under cattle grazing impact in sandy grasslands

2002 ◽  
Vol 32 (4) ◽  
pp. 531-552 ◽  
Author(s):  
Anselm Kratochwil ◽  
Swaantje Fock ◽  
Dominique Remy ◽  
Angelika Schwabe
Keyword(s):  
Seed Production ◽  
Cattle Grazing ◽  
Grazing Impact ◽  
Flower Phenology ◽  
Sandy Grasslands

Influence of meteorological conditions on male flower phenology of Cupressus sempervirens and correlation with pollen production in Florence

Trees ◽  
2007 ◽  
Vol 21 (5) ◽  
pp. 507-514 ◽  
Author(s):  
Tommaso Torrigiani Malaspina ◽  
Lorenzo Cecchi ◽  
Marco Morabito ◽  
Marzia Onorari ◽  
Maria Paola Domeneghetti ◽  
...  
Keyword(s):  
Male Flower ◽  
Meteorological Conditions ◽  
Pollen Production ◽  
Cupressus Sempervirens ◽  
Flower Phenology

MONITORING OF SPRING FLOWER PHENOLOGY IN NOVA SCOTIA: COMPARISON OVER THE LAST CENTURY

2001 ◽  
Vol 8 (4) ◽  
pp. 393-402 ◽  
Author(s):  
Liette Vasseur ◽  
Robert L. Guscott ◽  
Peta J. Mudie
Keyword(s):  
Nova Scotia ◽  
Flower Phenology

Nectar secretion pattern, removal effects, and breeding system of Ligaria cuneifolia (Loranthaceae)

1996 ◽  
Vol 74 (12) ◽  
pp. 1996-2001 ◽  
Author(s):  
Guillermo L. Rivera ◽  
Leonardo Galetto ◽  
L. Bernardello
Keyword(s):  
Reproductive Biology ◽  
Breeding System ◽  
Nectar Production ◽  
Female Function ◽  
Flower Nectar ◽  
Flower Age ◽  
Female Phase ◽  
Male Phase ◽  
Pattern Removal ◽  
Flower Phenology

Some aspects of the reproductive biology of Ligaria cuneifolia have been studied, addressing the following questions: (i) Are there temporal differences in the female and male functions? (ii) How do nectar composition, volume, concentration, and amount of sugar vary throughout the flower lifetime? (iii) How does the plant respond to nectar removal? (iv) What is the breeding system of this species? Flowers last 4 days. There is a predominance of the male function in the first days and of the female function in the last days. Chemical composition of nectar varies throughout the flower lifetime; there is a constant decrease in sucrose along with an increase in glucose. Nectar is secreted during nights, and every secretion period is followed by a cessation interval. After the final cessation, a period of active resorption follows. During the mostly male phase of the flower, nectar has more sucrose than hexose, its secretion is discontinuous, and nectar removal reduces the rate of nectar production. During the mostly female phase, nectar has more hexose than sucrose, its secretion ceases, nectar removal does not affect nectar production, and a resorption period is inferred. Tests for spontaneous autogamy and apomixis were negative. Low fruit set is obtained when autogamous, geitonogamous, and xenogamous hand pollinations are performed on flowers less than 2 days old compared with flowers at least 3 days old (0, 15, and 47% versus 19, 37.5, and 89%, respectively). These results indicate the the reproductive system of L. cuneifolia is primarily xenogamous, but reproductive success is related to flower age. Keywords: Loranthaceae, Ligaria, nectar chemistry, breeding system, flower phenology, reproductive biology.

DeepPhenology: Estimation of apple flower phenology distributions based on deep learning

2021 ◽  
Vol 185 ◽  
pp. 106123
Author(s):  
Xu (Annie) Wang ◽  
Julie Tang ◽  
Mark Whitty
Keyword(s):  
Deep Learning ◽  
Flower Phenology
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