Flowering and fruit set dynamics at phloem-isolated nodes in soybean

Flowering and fruit set dynamics at phloem-isolated nodes in soybean The dynamics of flowering and pod set of soybean ( Glycine max (L.) Merrill) was evaluated in two greenhouse experiments with a girdled node system. Plants (cv. Elgin 87) were grown in 3.0 l pots filled with a soil–vermiculite mixture (2:1, v/v) and the main stem below node seven (node one was node with unifolioliate leaves) (one-node treatment) or node five (three-node treatment) was girdled when the first flower opened at node seven. The main stem above node seven was removed as were the leaves at nodes five and six on the three-node treatment. Flower production, from daily counts of open flowers, followed a bi-modal distribution with the first cohort representing flowers on the main raceme while the second cohort contained flowers from sub-branches. Pods ≥10 mm long were marked with acrylic paint and the color was changed every 2 or 3 days to define at maturity when the surviving pods were initiated. The initiation of surviving pods followed the same pattern as flowers, and pods in the first cohort had nearly 100% survival while second cohort generally had survival rates <60%. Initial development of pods in the second cohort coincided with lower concentrations of stem sugars and a rapid increase in pods with ≥3 mm seeds. The three-node treatment had more flowers and pods in the first cohort and more pods at maturity. Utilization of large amounts of assimilate by rapidly growing early pods may contribute to the high levels of abortion of late developing flowers and pods. Thus, synchronous flowering may increase pod set by decreasing this competition between early and late developing pods. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Field Crops Research Elsevier

Flowering and fruit set dynamics at phloem-isolated nodes in soybean

Field Crops Research, Volume 79 (1) – Dec 6, 2002

Loading next page...
 
/lp/elsevier/flowering-and-fruit-set-dynamics-at-phloem-isolated-nodes-in-soybean-lReRjv7m02
Publisher
Elsevier
Copyright
Copyright © 2002 Elsevier Science B.V.
ISSN
0378-4290
eISSN
1872-6852
D.O.I.
10.1016/S0378-4290(02)00016-3
Publisher site
See Article on Publisher Site

Abstract

The dynamics of flowering and pod set of soybean ( Glycine max (L.) Merrill) was evaluated in two greenhouse experiments with a girdled node system. Plants (cv. Elgin 87) were grown in 3.0 l pots filled with a soil–vermiculite mixture (2:1, v/v) and the main stem below node seven (node one was node with unifolioliate leaves) (one-node treatment) or node five (three-node treatment) was girdled when the first flower opened at node seven. The main stem above node seven was removed as were the leaves at nodes five and six on the three-node treatment. Flower production, from daily counts of open flowers, followed a bi-modal distribution with the first cohort representing flowers on the main raceme while the second cohort contained flowers from sub-branches. Pods ≥10 mm long were marked with acrylic paint and the color was changed every 2 or 3 days to define at maturity when the surviving pods were initiated. The initiation of surviving pods followed the same pattern as flowers, and pods in the first cohort had nearly 100% survival while second cohort generally had survival rates <60%. Initial development of pods in the second cohort coincided with lower concentrations of stem sugars and a rapid increase in pods with ≥3 mm seeds. The three-node treatment had more flowers and pods in the first cohort and more pods at maturity. Utilization of large amounts of assimilate by rapidly growing early pods may contribute to the high levels of abortion of late developing flowers and pods. Thus, synchronous flowering may increase pod set by decreasing this competition between early and late developing pods.

Journal

Field Crops ResearchElsevier

Published: Dec 6, 2002

References

  • Leaf starch accumulation and seed set at phloem-isolated nodes in soybean
    Bruening, W.P.; Egli, D.B.
  • Cultivar maturity and response of soybean to shade stress during seed filling
    Egli, D.B.
  • Carbon transfer and partitioning between vegetative and reproductive organs in Pisum sativum L
    Jeuffroy, M.H.; Warembourg, F.R.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off