1) Tolerance to environmental stresses (temperature, moisture, salt tolerance).
2) Disease resistance particularly to viruses, late blight, bacterial wilt, fusarium (race 3), verticillium (race 2) powdery mildew, phytophtora root rot, Pythium and bacterial spot).
3) Fruit quality, particularly high soluble solids.
Dr. Allen Stoner (USDA, ARS) serves as coordinator of the national tomato germplasm enhancement plan. The tomato CAC will meet in the future during the Tomato Breeders Roundtable (TBRT). The committee presently comprises 3 industry, 3 state, 3 federal and 1 Canadian representatives. Its purpose is to coordinate and prioritize tomato germplasm collection, maintenance, evaluation and enhancement efforts in North America
Collections of Isogenic Tomato Stocks. E. C. Tigchelaar The proposal for a "clearing house" for isogenic tomato stocks for physiological genetic studies (TGC 33) received favorable response. Offers to provide stocks for general use are as follows:
Isogenic Donor
Gene Background Parents Status Source
A. Cornell Isogenics
I Vendor BC\7\ (1)
Ve,I Vendor BC\7\ (1)
Ve,I,Tm\2\^a Vendor BC\7\ (1)
Ve Gardner BC\8\ (1)
Ve,I Gardner BC\8\ (1)
u Gardner BC\8\ (1)
sp Gardner BC\8\ (1)
j^1 Gardner BC\8\ (1)
sp, Ve Gardner ? (1)
u,sp,Ve,I Gardner ? (1)
d Gardner BC\8\ (1)
Cf\2\ AC, MM Vetomold BC\5\ (2)
Cf\3\ AC, MM V 121 BC\5\ (2)
Cf\4\ AC, MM Purdue 135 BC\5\ (2)
Cf\5\ AC, MM PI 187002-1 BC\5\ (2)
Cf\9\ AC, MM PI 126915 BC\5\ (2)
? AC, MM IVT 63280 BC\5\ (2)
(L. pimpinellifolium)
? AC, MM IVT 64316 BC\5\ (2)
(L. pimpinellifolium)
? AC, MM IVT 66063 BC\5\ (2)
(L. pimpinellifolium)
? AC, MM Alex E BC\5\ (2)
(L. pimp. x L. peruvianum)
C. Carotene and Ripening Mutant Isogenics
r Rutgers Snowball BC\6\ (3)
r Campbell 37 Spontaneous Mutant C37 (3)
t^v Rutgers BC (3)
at Rutgers BC\6\ (3)
Del Rutgers BC\6\ (3)
B Rutgers Caro-Red BC\6\ (3)
rin Rutgers LM-11 BC\8\ (3)
nor Rutgers Italian Winter BC\4\ (3)
nor MHl Italian Winter BC\6\ (3)
Nr Rutgers BC\6\ (3)
hp Rutgers BC\6\ (3)
dg Manapal Spontaneous Mutant Manapal (3)
1 (or 1-2) Early Pak 7 Spontaneous Mutant Early Pak 7 (3)
D. Anthocyan Mutants
ah Chico Grande BC\7\ (3)
aa Chico Grande BC\8\ (3)
afr Chico Grande BC\6\ (3)
af Chico Grande BC\6\ (3)
ae Chico Grande BC\7\ (3)
bls Chico Grande BC\8\ (3)
Seed of these stocks will be increased during 1984 and should be available for
interested users by early 1985. If others have stocks they wish to add to the
collection, please forward them at your earliest convenience.
Sources:
1) Dr. I. W. Boukema 2) Dr. M. Mutschler
Postbus 16 Dept. Plant Breeding & Genetics
6700 AA Wageningen Bradfield 407
Holland Cornell University
Ithaca, NY 14853
3) Dr. E. C. Tigchelaar
Department of Horticulture
Purdue University
West Lafayette, IN 47907
Proposal for Chloroplast Gene Nomenclature. At a conference on "Structure and
Function of the Plant Genome" held in Portese, Italy, in September 1982, a
meeting was held to discuss the possibility of making a standard nomenclature
for naming genes coding for chloroplast proteins and RNAS. Those in
attendance agreed that such a standard nomenclature would be valuable and
nominated a committee of two, (W. Bottomley from Canberra and R. B. Hallick
from Boulder) to draft a set of guidelines. These were formulated and
circulated at the meeting and the response was, in general, favorable.
Subsequently, the draft proposal was circulated to various interested parties
with an invitation to suggest changes or modifications.
At the conference on "Biosynthesis of the Photosynthetic Apparatus: Molecular
Biology, Development, and Regulation" held in Keystone, Colorado in April
1983, a second meeting was held to discuss all suggested amendments to the
nomenclature, and to formalize a draft proposal for publication. A set of
guidelines was agreed to by all who attended this special workshop on
chloroplast gene nomenclature. This proposed nomenclature guide will be
published in a future issue of Plant Molecular Biology Reporter. Information
can be obtained from:
Dr. Richard B. Hallick
Department of Chemistry
Box 215
University of Colorado
Boulder, CO 80309