Title: Research highlights
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Permanent Link: http://ufdc.ufl.edu/UF00071929/00002
 Material Information
Title: Research highlights
Uniform Title: Research highlights (East Lansing, Mich.)
Physical Description: v. : ill. ; 28 cm.
Language: English
Creator: Bean/Cowpea Collaborative Research Support Program
Publisher: Michigan State University Bean/Cowpea CRSP
Place of Publication: East Lansing
Publication Date: 1984-
 Subjects
Subject: Beans -- Research -- Periodicals -- Africa   ( lcsh )
Beans -- Research -- Periodicals -- Latin America   ( lcsh )
Cowpea -- Research -- Periodicals -- Africa   ( lcsh )
Cowpea -- Research -- Periodicals -- Latin America   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
periodical   ( marcgt )
 Notes
Statement of Responsibility: Michigan State University Bean/Cowpea CRSP.
Dates or Sequential Designation: Vol. 1, no. 1 (1984)-
General Note: Title from caption.
Funding: Electronic resources created as part of a prototype UF Institutional Repository and Faculty Papers project by the University of Florida.
 Record Information
Bibliographic ID: UF00071929
Volume ID: VID00002
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 13864898

Full Text




RESEARCH HIGHLIGHTS
Michigan State University Bean/Cowpea CRSP


Vol. I No. 2 1984


Ardeshir Ghaderi, Editor


Five Improved Multiple
Disease Resistance Lines Released
Dominican Republic-Honduras/University of Puerto Rico/Lopez-Rosa


Two projects of the Bean/Cowpea CRSP
(the University of Puerto Rico collaborating
with the Dominican Republic Ministry of Ag-
riculture and the University of Puerto Rico
collaborating with Escuela Agricola
Panamericana in Honduras) were developed
in collaboration with the ongoing program
of TARS (ARS/USDA). These research efforts
were organized to address the problems of
bean yield losses associated with high dis-
ease susceptibility among the bean varieties
popular in the region. As a result of this ex-
tensive collaborative effort which included
contributions from the Michigan State Uni-
versity bean breeding program, 5 improved
multiple disease resistant genotypes, includ-
ing white, red and black seeded lines, have
been released. These lines were made avail-
able to other breeding programs in the
tropics and the United States.

Release of Two Kidney Bean
Breeding Germ Plasm Lines 3M-150
and 3M-152
The Agricultural Research Service of the
U.S. Department of Agriculture and the Ag-
ricultural Experiment Station of the Univer-
sity of Puerto Rico announce the release of
two kidney bean breeding germ plasm lines
with multiple disease resistance and adapta-
tion to the hot and humid conditions of the
tropics. These lines have been developed by
a cooperative research program between the
Tropical Agriculture Research Station
(ARS/USDA) and the University of Puerto


Rico (supported in part by the Agency for In-
ternational Development through contracts
AID/CM/TA-C-73-26 and AID/TA-C-1296, and
lately by Grant AID/DSAN/XII-G-0261, Bean/
Cowpea CRSP), collaborating with the gov-
ernment of the Dominican Republic and EAP
of Honduras. 3M-150 is being released as a
mixture of solid color and pinto seed pat-
terns and 3M-152 is a light red kidney seed
type. These lines are recommended to be
used for increasing disease resistance and
reducing genetic vulnerability of the kidney
and cranberry bean types being grown in the
U.S.
These lines originate from F2 single plant
selections from a cross between the Mexican
line Michoacan 68-B-1 (a progenitor of the
Mexican cultivar Canarlo 101) and 27-R, a
light red kidney line showing wide adaptabil-
ity during many years of trials in the
PCCMCA Central American nurseries. These
lines combine the disease resistance of
Michoacan 68-B-1 with the seed type and
wide adaptability of 27-R.
3M-150 and 3M-152 have been tested for
disease resistance in field trials at 3 locations
in Puerto Rico for 5 years. They have been
resistant to root rots, angular leaf spot
(Isariopsis griseola), and bean common
mosiac virus. They are slightly-susceptible to
moderately-susceptible to rugose viruses
and powdery mildew, but are highly-
susceptible to bacterial blights. They have
been inoculated at Beltsville with 14 U.S.
rust races and show a uniformly moderate
resistance with the exception of being very
susceptible to race 72/16.


Funded through USAID/BIFAD Grant No. AID/DSAN-XII-G-0261






The plants are determinate, producing
several to many branches and will grow to
30-40 cm tall. They are very resistant to lodg-
ing with good root systems and strong
stems. These lines require good conditions
of fertility and moisture, thus yields will be
considerably reduced under conditions of
low fertility or excessive rainfall. Yields over
5 years at the best location in Puerto Rico,
under irrigation at 1 m row spacing, aver-
aged 1748 K/Ha for 3M-150 and 1731 K/Ha for
3M-152; however narrower row spacings are
recommended. They are daylength insensi-
tive, blooming in 35 to 40 days and mature in
75 to 80 days after planting during all sea-
sons in Puerto Rico. Seed weight for 3M-150
is 43-44 g/100 seed and 3M-152 is about 42
g/100 seed.

Release of Two Navy Dry Bean
Breeding Germ Plasm Lines L-226-10
and L-227-1
The Agricultural Research Service of the
U.S. Department of Agriculture, the Agricul-
tural Experiment Stations of Michigan State
University and the University of Puerto Rico
announce the release of two navy dry bean


Plate 1: Dr. George F. Freytag, CRSP US Co-
Principal Investigator, USDA, MITA,
University of Puerto Rico.


breeding germ plasm lines, L-226-10 and
L-227-1. These lines have been developed by
a cooperative research program between the
Tropical Agriculture Research Station
(USDA/ARS), Michigan State University and
the University of Puerto Rico and (supported
in part by the Agency for International De-
velopment through contracts AID/CM/TA-
C-73-26 and AID/TA-C-1296, and lately by
Grant AID/DSAN/XII-G-0261, Bean/Cowpea
CRSP), collaborating with the government of
the Dominican Republic and EAP of Hon-
duras. These two lines combine very high
levels of disease resistance with an erect,
lodging-resistant plant type.
The plant types are erect, short semi-vines
(L-226-10 is somewhat more elongate) with
few lateral branches, well developed root
systems and stout stems, remaining erect
through harvest. High fertility tends to in-
crease the vining tendency. Blooming occurs
35-40 days and maturity 95-100 days after
planting both in Michigan and in Puerto
Rico. In trials in Puerto Rico these lines show
no daylength sensitivity and have grown and
yielded well even under hot (30-35" C) and
humid tropical conditions. Preliminary trials


Plate 2: Dr. Cesar Paniagua, CRSP Host Country Principal
Investigator and Coordinator, National Legume
Program, SEA, Dominican Republic.






under these conditions at three locations in-
dicate yields in the range of 1400-1600 K/Ha
which is approximately 1/3 more than the
standard white been cultivar W-117. These
yields are in the range of the best black trop-
ical bean cultivars; thus these are the first
white bean lines showing this high yield po-
tential. The seed type of these lines is within
the normal standards of the navy class, a dull
chalky white, with a very low percentage of
blemished grain. Seed weight is about 19
g/100 seed for L-226-10 and 18 g/100 seed for
L-227-1.
The original crosses were made in Puerto
Rico to combine the multiple disease resis-
tance of the Puerto Rico black bean line
2B-5-1 with the erect plant type and high
yield of the Michigan State University line N
76012. It was then backcrossed to N 76012. A
selection of this progeny, MSU N 80051, was
subsequently crossed with MSU N 81009
(Bunsi/NEP-2) to produce L-226-10 MSU N
82152), and crossed to MSU X 80101 (W-18/
Kent/ /Bunsi/NEP-2) to produce L-227-1 (MSU
N 82160). Selections of these lines were
made in the F3 generation in Puerto Rico for
multiple disease resistance, erect plant type,


and vigor. In the F4 generation the lines
were grown in a preliminary yield trial and
rated for disease resistance and agronomic
type. The Fs generation was rogued in
Puerto Rico in the spring off-season. The F6
generation was tested in a replicated yield
trial at 3 locations in Puerto Rico during the
1982-83 winter season.
These two lines were inoculated at Belts-
ville with 14 U.S. rust races and found highly
resistant (necrotic spots) to 6 races and resis-
tant (pustules less than 300 u) to 7 races, ex-
pressing susceptibility only to race 15-G
from the Dakotas. This resistance pattern is
inherited from Mex. 309 via 2B-5-1 and is
field resistant to all rust races in Puerto Rico.
According to preliminary inheritance studies
conducted at Beltsville, this resistance con-
sists of a series of closely linked dominant
genes. It has given stable resistance in
Puerto Rico for 9 years. These lines also
carry the dominant I-gene resistance to bean
common mosiac virus, show high field resis-
tance to viruses in Puerto Rico, and high re-
sistance to soil root rot pathogens including
Macrophomina. Both lines are susceptible to
the alpha and delta races of anthracnose.


Plate 3: Harvested beans and beans ready for harvesting from project adaptation
trials, San Juan de la Maguana, Dominican Republic (CESDA).






Release of a Dry Bean Breeding
Germ Plasm Line 4M-99
The Agricultural Research Service of the
U.S. Department of Agriculture and the Ag-
ricultural Experiment Station of the Univer-
sity of Puerto Rico announce the release of
the dry bean breeding germ plasm line
4M-99 which has been outstanding for mul-
tiple disease resistance, especially angular
leaf spot (Isariopsis griseola), wide adaptabil-
ity and high yield potential in Puerto Rico.
This line has been developed by a coopera-
tive research program between the Tropical
Agriculture Research Station (ARS/USDA)
and the University of Puerto Rico supported
in part by the Agency for International De-
velopment through contracts AID/CM/TA-
C-73-26 and AID/TA-C-1296, and lately by
Grant AID/DSAN/XII-G-0261, Bean/Cowpea
CRSP) collaborating with the government of
the Dominican Republic and EAP of Hon-
duras.
This line originated from an F2 selection
from a multi-cross attempting to combine 3
sources of tropical rust resistance. The
female parent was the F, of a double cross
containing the linked-gene set for rust resis-


tance from Mex. 309 and the male was the F,
of a 3-way cross involving the two polygenic
rust tolerant lines Ecuador 299 and MITA-
6383 (M-1). The resulting line was sub-
sequently selected for multiple disease resis-
tance and rogued through the F3 and F4 gen-
erations at several locations with high dis-
ease incidence.
Field trials during 4 years at 3 locations in
Puerto Rico and 1 year at 15 locations in the
Dominican Republic have shown that this
line is uniformly highly resistant or resistant
to rust, angular leaf spot (Isariopsis griseola),
powdery mildew, bean common mosaic
virus, rugose virus, and root rots. It is
slightly tolerant to common blight.
Yields have been equal to or superior to
those of the best local black bean cultivars,
and it has often produced the best yields of
the lines tested when disease incidence was
severe. The 4-year yield average at three lo-
cations in Puerto Rico was 1359 K/Ha at a 1 m
row spacing. A somewhat narrower row
spacing is recommended. The plant has a
semi-vine, somewhat sprawling, type II plant
type. It blooms in 35-40 days and matures in
80-90 days after planting. Seed is khaki-
brown to dark brown and weighs about 24
g/100 seed.


THE BEAN/COWPEA CRSP
An international community of persons, institutions,
agencies and governments committed to collectively
strengthening health and nutrition in developing
countries by improving the availability
and utilization of beans and cowpeas







For further information contact:
Bean/Cowpea CRSP
200 Center for International Programs
Michigan State University
East Lansing, Michigan 48824-1035
U.S.A.

Telephone: (517) 355-4693
Telex: 810-251-0737
MSU INT PRO ELSG




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