Pollen Deposition, Pollen Tube Growth, Seed Production, and Seedling Performance in Natural Populations of Clarkia unguiculata (Onagraceae)

2003 ◽  
Vol 164 (1) ◽  
pp. 153-164 ◽  
Author(s):  
M. Barbara Németh ◽  
Nancy L. Smith‐Huerta
Keyword(s):  
Pollen Tube ◽  
Seed Production ◽  
Pollen Tube Growth ◽  
Natural Populations ◽  
Tube Growth ◽  
Pollen Deposition ◽  
Seedling Performance ◽  
Clarkia Unguiculata

scholarly journals Pollen tube growth from multiple pollinator visits more accurately quantifies pollinator performance and plant reproduction

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jamie R. Stavert ◽  
Charlie Bailey ◽  
Lindsey Kirkland ◽  
Romina Rader
Keyword(s):  
Pollen Tube ◽  
Seed Production ◽  
Plant Species ◽  
Pollen Tube Growth ◽  
Plant Reproduction ◽  
Tube Growth ◽  
Pollen Deposition ◽  
Pollen Quality ◽  
Single Visit ◽  
Pollinator Performance

Abstract Pollination services from animals are critical for both crop production and reproduction in wild plant species. Accurately measuring the relative contributions of different animal taxa to pollination service delivery is essential for identifying key pollinators. However, widely used measures of pollinator effectiveness (e.g., single visit pollen deposition) may be inaccurate where plant reproduction is strongly constrained by pollen quality. Here, we test the efficacy of single and multiple pollinator visits for measuring pollinator performance in a model plant species (apple, Malus domestica Borkh) that is strongly limited by pollen quality. We determined pollination success using a suite of measures (pollen deposition, pollen tube growth, fruit and seed set) from single and multiple pollinator visits. We found that pollen deposition from a single pollinator visit seldom resulted in the growth of pollen tubes capable of eliciting ovule fertilisation and never resulted in fruit or seed production. In contrast, multiple pollinator visits frequently initiated the growth of pollen tubes capable of ovule fertilisation and often led to fruit and seed production. Our findings suggest that single visit pollen deposition may provide a poor measure of pollinator performance when linked to reproductive success of plant species that are constrain by pollen quality. Alternatively, pollen tube growth from single and multiple pollinator visits can provide a measure of pollinator performance that is more closely linked to plant reproduction.

Pollen–pistil interaction, pistil histology and seed production in A×B grain sorghum crosses under chilling field temperatures

2009 ◽  
Vol 148 (1) ◽  
pp. 73-82 ◽  
Author(s):  
M. E. CISNEROS-LÓPEZ ◽  
L. E. MENDOZA-ONOFRE ◽  
H. A. ZAVALETA-MANCERA ◽  
V. A. GONZÁLEZ-HERNÁNDEZ ◽  
G. MORA-AGUILERA ◽  
...  
Keyword(s):  
Pollen Tube ◽  
Seed Production ◽  
Pollen Tube Growth ◽  
Pollen Germination ◽  
Vascular Tissue ◽  
Pollen Viability ◽  
Tube Growth ◽  
Male Sterile ◽  
Pollen Diameter

SUMMARYSix pairs of isogenic lines of sorghum (Sorghum bicolor L. Moench) were sown in field plots in Montecillo, State of México (2240 m altitude), in 2005 and 2006. Crosses A (♀)×B (♂) were done in each pair. In A-lines, the length of pistil, stigma, style and ovary, as well as the ovary width, were measured. In B-lines, pollen diameter, viability (cytoplasm density) and production were evaluated. Pollen germination and pollen tube growth in the pistils of the A-lines, were quantified in vivo with aniline blue and epifluorescence 18 h after pollination (HAP), while fertilized pistils were counted at 96 HAP. Histological studies on both pollinated and non-pollinated pistils were performed in one male-sterile line. Seed yield, mean-seed weight, seeds per panicle and seed set (SS; seeds/flower/panicle) were determined at harvest. Pollen viability was the variable most related to pollen germination and pollen tube growth. Stigma receptivity was not associated with its morphology. Growth of the pollen tube in stigma, style and ovary was observed in the transmitting tissue 18 HAP, running parallel to the vascular tissue. Yield under chilling field temperatures (minimum average of 6 and 8°C) prevailing during flower development and pollination ranged from 7 to 12 g/panicle. The differences in seed production and SS among A×B crosses did not depend on the amount and viability of pollen.

scholarly journals Pollen Tube Growth in Carya and Temporal Influence of Pollen Deposition on Fertilization Success in Pecan

1992 ◽  
Vol 117 (2) ◽  
pp. 328-331 ◽  
Author(s):  
Robert D. Marquard
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Pollen Tubes ◽  
Fertilization Success ◽  
Tube Growth ◽  
In Vivo Studies ◽  
Pollen Deposition ◽  
Cape Fear

In vivo pollen tube growth of pecan [Carya illinoinensis (Wangenh.) K. Koch] was estimated to be ≈ 150 μm·hour-1 from 3 to 8 hours postpollination. Pollen tubes averaged 47, 194, 405, and 946 μm after 2, 3, 4, and 8 hours postpollination, respectively. Pollen tube growth was strongly influenced by temperature, and in vitro studies demonstrated pollen germination and tube growth were optimal at 27C for `Cape Fear' pecan. In in vivo studies, tubes of cross-pollen did not grow significantly faster than tubes of self-pollen. Pollen tubes of water hickory [C. aquatica (Michx. f.) Nutt.] grew significantly faster than those of C. illinoinensis. Bitternut [C. cordiformis (Wangenh.) K. Koch] and mockernut hickory (C. tomentosa Nutt.) pollen tubes grew significantly slower on pecan stigmas than did pecan pollen. Pollen arriving first on the stigma has a decided advantage for fertilization success of pecan. The fertilization success rate of pecan pollen arriving 24 hours after first pollen arrival was <3%.

scholarly journals Comparison of Self- and Cross-pollination on Pollen Tube Growth, Seed Development, and Germination in Crapemyrtle

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 575-578 ◽  
Author(s):  
Cecil Pounders ◽  
Sandra Reed ◽  
Margaret Pooler
Keyword(s):  
Seed Germination ◽  
Pollen Tube ◽  
Seed Production ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Cross Pollination ◽  
Landscape Plants ◽  
Incompatibility System ◽  
Self Fertilization ◽  
Self Compatibility

Crapemyrtle (L. indica and L. indica × L. fauriei hybrids) is one of the most popular flowering landscape plants in the U.S. Although many cultivars have been developed through breeding efforts, little has been published on the reproductive biology of the genus. The objective of this study was to evaluate barriers to successful self-seed production in crapemyrtle. Self-compatibility was assessed by comparing pollen tube growth, fruit and seed production, and seed germination following controlled self- and cross-pollinations. Observations of pollen tube growth at intervals up to 24 hours after self- and cross-pollination indicated no barriers to self-fertilization acting at the stigmatic or stylar level in L. indica, L. fauriei or cultivars derived from inter-specific hybrids of these two species. Self-pollinations of `Catawba', `Whit IV', `Tonto' and `Tuscarora' had lower percent seed pod set and seed germination than did cross-pollinations of these cultivars. The number of seeds per pod was lower when `Catawba', `Whit IV' and `Tuscarora' were self-rather than cross-pollinated, but no difference between `Tonto' self- and cross-pollinations was observed. When decreased pod set is combined with much lower seed germination for self-pollinations, selfing of crapemyrtle is extremely unproductive when compared to cross-pollination. A late-acting self-incompatibility system or inbreeding depression is indicated for L. indica and inter-specific crosses with L. fauriei.

Hypergravity prevents seed production in Arabidopsis by disrupting pollen tube growth

Planta ◽  
2009 ◽  
Vol 230 (5) ◽  
pp. 863-870 ◽  
Author(s):  
Mary E. Musgrave ◽  
Anxiu Kuang ◽  
Joan Allen ◽  
Jack J. W. A. van Loon
Keyword(s):  
Pollen Tube ◽  
Seed Production ◽  
Pollen Tube Growth ◽  
Tube Growth

POLLEN TUBE GROWTH AND SEED PRODUCTION IN SELF AND CROSS POLLINATION IN TELOPEA SPECIOSISSIMA

2008 ◽  
pp. 107-118
Author(s):  
G.A. Reynoso-Castillo ◽  
K. Nomura ◽  
S. Fukai ◽  
A. Hasegawa ◽  
M. Goi
Keyword(s):  
Pollen Tube ◽  
Seed Production ◽  
Pollen Tube Growth ◽  
Tube Growth ◽  
Cross Pollination

Inhibition of Pollen Tube Growth by Diffusate and Extract of Grape Pistils

1989 ◽  
Vol 58 (3) ◽  
pp. 515-521 ◽  
Author(s):  
Goro OKAMOTO ◽  
Ikuo SHIBUYA ◽  
Miwa FURUICHI ◽  
Kazuo SHIMAMURA
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Tube Growth
Sign in / Sign up

Export Citation Format

Share Document