Jack Harlan

Q: What Schools Are Affiliated With Jack Harlan

Jack Harlan is affiliated with the following schools: George Washington University, University of California, Los Angeles, University of Oklahoma, Tulane University

Jack Harlan's AcademicInfluence.com Rankings

Jack Harlan

Biology

#3091

World Rank

#4778

Historical Rank

#1300

USA Rank

Botany

#84

World Rank

#473

Historical Rank

#30

USA Rank

biology Degrees

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Biology

Why Is Jack Harlan Influential?

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According to Wikipedia, Jack Rodney Harlan was an American botanist, agronomist, plant collector, and campaigner for crop plant biodiversity conservation. Early life Born in Washington, DC, Jack Harlan was the son of Harry Harlan, a plant breeder who worked on barley at the US Department of Agriculture , and who travelled around the world on seed collecting expeditions in search of new genetic material for use the USDA's crop breeding programs. Harry Harlan was a friend of the famous Russian plant breeding expert Nikolai Vavilov, and at the age of fifteen Jack Harlan met Vavilov when the latter stayed at the Harlan house during an international conference. This meeting inspired Jack to become a plant collector himself, and plans were made for him to travel to Russia after finishing his undergraduate degree to work with Vavilov. However the trip was cancelled as a result of Vavilov's deteriorating relationship with the Soviet authorities.

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Jack Harlan's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Crops and Man. (1977) (1382)
Toward a rational classification of cultivated plants (1971) (944)
Agricultural Origins: Centers and Noncenters (1971) (621)
Distribution of Wild Wheats and Barley (1966) (610)
COMPARATIVE EVOLUTION OF CEREALS (1973) (484)
A Simplified Classification of Cultivated Sorghum 1 (1972) (460)
Our vanishing genetic resources. (1975) (380)
On Ö. Winge and a Prayer: The origins of polyploidy (1975) (304)
Evidence for cultivation of sesame in the ancient world (1986) (243)
Genetic Resources in Wild Relatives of Crops 1 (1976) (233)
Weeds and Domesticates: Evolution in the man-made habitat (1975) (198)
Sesamin, sesamolin and the origin of sesame☆ (1985) (163)
The Living Fields: Our Agricultural Heritage. (1995) (150)
Endoscopic drainage of pancreatic pseudocysts. (1985) (148)
A wild wheat harvest in Turkey (1967) (126)
The possible role of weed races in the evolution of cultivated plants (1965) (119)
The Races of Sorghum in Africa (1976) (117)
Saharan exploitation of plants 8,000 years BP (1992) (115)
Diseases as a Factor in Plant Evolution (1976) (114)
Ethiopia: A center of diversity (1969) (114)
The morphology and domestication of pearl millet (1977) (109)
A prospective, controlled analysis of endoscopic cytotechniques for diagnosis of malignant biliary strictures. (1991) (107)
THE COMPILOSPECIES CONCEPT (1963) (106)
Introduction of soybean to North America by Samuel Bowen in 1765 (1983) (105)
The origin and domestication ofSorghum bicolor (1971) (103)
Sources of Variation in Cynodon dactylon (L). Pers. 1 (1969) (100)
Endoscopic therapy for patients with a post-operative biliary leak. (1993) (93)
Genetics of Disaster 1 (1972) (90)
ARCHAEOBOTANICAL STUDIES OF ELEUSINE CORACANA SSP. CORACANA (FINGER MILLET) (1979) (90)
Antacids vs placebos in peptic ulcer therapy. A controlled double-blind investigation. (1973) (83)
APOMIXIS, POLYPLOIDY, AND SPECIATION IN DICHANTHIUM (1970) (81)
Endoscopic retrograde wire-guided brush cytology for diagnosis of patients with malignant obstruction of the bile duct. (1990) (80)
Wild-grass seed harvesting in the Sahara and sub-Sahara of Africa. (1989) (78)
Who's In Charge? (1981) (77)
Anatomy of Gene Centers (1951) (75)
The wild diploid progenitors of wheat and their breeding value (1969) (74)
Nature and Inheritance of Apomixis in Bothriochloa and Dichanthium (1964) (73)
Origins and processes of domestication. (1992) (72)
Geographic Patterns of Variation in Some Cultivated Plants (1975) (67)
Cleistogamy and Chasmogamy in Bromus Carinatus Hook & Arn (1945) (67)
Indigenous African Agriculture (1992) (66)
Thrombophlebitis with diazepam used intravenously. (1973) (64)
The Plants and Animals that Nourish Man (1976) (61)
Wire-guided brush cytology: a new endoscopic method for diagnosis of bile duct cancer. (1989) (57)
On the Quality of Evidence for Origin and Dispersal of Cultivated Plants [and Comments and Reply] (1973) (52)
Plant Domestication and Indigenous African Agriculture (1976) (50)
Effect of Various Methods and Rates of Nitrogen Application on Seed Yield of Switchgrass (Panicum virgatum L.) 1 (1953) (50)
ORIGIN OF VARIABILITY IN THE SPONTANEA COMPLEX OF SORGHUM BICOLOR (1970) (49)
Generalized Curves for Gain Per Head and Gain Per Acre in Rates of Grazing Studies. (1958) (47)
Pathways of genetic transfer from Tripsacum to Zea mays. (1977) (47)
Cynodon species and their value for grazing and hay. (1970) (46)
Variability in Sorghum bicolor (1976) (45)
early history of wheat: Earliest traces to the sack of Rome (1981) (45)
The Origins of Cereal Agriculture in the Old World (1977) (44)
Relationships between weeds and crops (1982) (44)
Cytogenetic Studies in Cynodon L. C. Rich. (Gramineae)1 (1970) (44)
Cytogenetics of Introgression from Saccharum into Sorghum 1 (1976) (41)
Literature review and numerical taxonomy ofEragrostis tef (T’ef) (1979) (41)
The tropical African cereals. (1989) (39)
Studies on old world bluestems. (1955) (38)
CHROMOSOME PAIRING AND PHYLOGENETIC AFFINITIES (1972) (35)
Patterns of morphological variation insesamum indicum (1986) (34)
SYSTEMATICS OF TRIPSACUM DACTYLOIDES (GRAMINEAE) (1982) (33)
Caudatum sorghums and speakers of Chari-Nile languages in Africa (1975) (33)
A guide to the species of Cynodon (Gramineae). (1970) (33)
Geographic distribution of the species of Cynodon L. C. Rich (Gramineae). (1970) (32)
A CYTOLOGICAL STUDY OF BOUTELOUA GRACILIS FROM WESTERN TEXAS AND EASTERN NEW MEXICO (1953) (32)
Mode of Chromosome Association in Bothriochloa Hybrids (1962) (31)
Origin and evolution of Guinea sorghums (1972) (31)
Contributions to the ecology of halophytes (2004) (30)
Plant and Animal Distribution in Relation to Domestication (1976) (30)
Role of Apomixis in the Evolution of the Bothriochloa-Dichanthium Complex 1 (1963) (29)
Archaeobotany of the early Neolithic site E-75-6 at Nabta Playa, western desert, South Egypt (1995) (29)
APOMIXIS IN SIDE‐OATS GRAMA (1949) (28)
Evolutionary history of cultivated sorghums (Sorghum bicolor [Linn.] Moench) of Ethiopia (1975) (28)
HYBRIDIZATION STUDIES WITH SPECIES OF CYNODON FROM EAST AFRICA AND MALAGASY (1969) (27)
MORPHOLOGY OF THE COMPILOSPECIES BOTHRIOCHLOA INTERMEDIA (1966) (27)
Endoscopic placement of biliary stents for treatment of high risk geriatric patients with common duct stones. (1989) (27)
Plant Domestication: Diffuse Origins and Diffusions (1986) (27)
Collection of Crop Plants in Turkey, 19484 (1950) (27)
MORPHOLOGY, INHERITANCE, AND EVOLUTIONARY SIGNIFICANCE OF SEX REVERSAL IN TRIPSACUM DACTYLOIDES (POACEAE) (1987) (26)
Tripsacum-maize interaction: a novel cytogenetic system. (1974) (26)
Chromosome Pairing within Genomes in Maize-Tripsacum Hybrids (1970) (23)
Biosystematics of Cynödon L. C. Rich. (Gramineae. (1970) (23)
Nuba agriculture and ethnobotany, with particular reference to sesame and sorghum (1983) (22)
Theory and Dynamics of Grassland Agriculture (1957) (22)
Origin of maize: The tripartite hypothesis (1972) (22)
NATURAL BREEDING STRUCTURE IN THE BROMUS CARINATUS COMPLEX AS DETERMINED BY POPULATION ANALYSES (1945) (21)
Rapid amplification and fixation of new restriction sites in the ribosomal dna repeats in the derivatives of a cross between maize and Tripsacum dactyloides (1985) (20)
An Andropogoneae Garden in Oklahoma (1956) (20)
The genus Cynodon L. C. Rich, in tropical Africa. (1970) (19)
MORPHOLOGY OF SACCHARUM‐SORGHUM HYBRID DERIVATIVES (1978) (18)
Genetic resources in sorghum (1972) (18)
SOURCES OF GENETIC DEFENSE (1977) (17)
The cytogeography of the Bothriochloa ischaemum complex. Gramineae. (1958) (17)
Two Kinds of Gene Centers in Bothriochloininae (1963) (17)
Emergency endoscopic retrograde cholangiopancreatography in critically ill patients. (1998) (15)
OBSERVATIONS ON INTROGRESSION OF TRIPSACUM INTO MAIZE (1977) (15)
Studies on old world bluestems III. (1961) (15)
The breeding behavior of side-oats grama in partially isolated populations. (1950) (15)
Apomixis in Bothriochloa, Dichanthium and Capillipedium (1957) (15)
The origins of indigenous African agriculture (1982) (15)
Cytology and Morphology of Maize-Tripsacum Introgression 1 (1977) (14)
A Suggested Method for Determining Purity of Certain Chaffy‐Seeded Grasses1 (1960) (14)
Introgression from Tripsacum into Zea and the Origin of Maize (1972) (14)
Natural Introgression between Bothriochloa ischaemum and B. intermedia in West Pakistan (1963) (13)
BOTHRIOCHLOA INTERMEDIA - A TAXONOMIC DILEMMA (1970) (13)
Breeding Behavior of Maize-Tripsacum Hybrids 1 (1973) (13)
Stable triploid hybrids among Zea-Tripsacum-Zea back-cross populations. (1970) (13)
THE ORIGIN OF TRIPSACOID MAIZE (ZEA MAYS L.) (1978) (13)
Systematics of Tripsacum (Gramineae) (1976) (13)
Range of Hybridization with Bothriochloa intermedia (R. Br.) A. Camus 1 (1962) (13)
Studies on the Origin of Caucasian Bluestem, Bothriochloa caucasica (Trin.) C. E. Hubbard (1963) (13)
Status of Musl-2, the Second Microtron Using a Superconducting Linac (1977) (12)
Chromosomal Variation Among Offspring of Hybrid Derivatives with 20 Zea and 36 Tripsacum Chromosomes (1974) (12)
Origin and distribution of the seleucidus race ofCynodon dactylon (L.) pers. var.Dactylon (gramineae) (1970) (12)
The cytogenetics of hybrids in Bromus II. Bromus carinatus and Bromus arizonicus (1944) (11)
Gene Centers and Gene Utilization in American Agriculture (1977) (11)
Microtron Using a Superconducting Electron Linac (1975) (10)
Registration of Texoka buffalograss (1975) (10)
Harvesting of Wild-grass Seed and Implications for Domestication (1999) (10)
Breeding Superior Forage Plants for the Great Plains. (1960) (10)
Wild Grass Seeds as Food Sources in the Sahara and Sub-Sahara (1989) (10)
Cytology of Backcross four Individuals Derived from a Saccharum-Sorghum Hybrid (1976) (9)
Origin and evolution of teosinte (Zea mexicana (Schrad.) Kuntze) (1971) (9)
The Garden of the Lord : A plausible reconstruction of natural resources of Southern Jordan in Early Bronze Age (1982) (9)
Sympatric evolution in sorghum. (1974) (8)
What is a Crop (1992) (8)
MORPHOLOGY OF TEOSINTOID AND TRIPSACOID MAIZE (ZEA MAYS L.) (1978) (8)
Cytology of Backcross Offspring Derived from a Maize‐Tripsacum Hybrid 1 (1973) (8)
Range Management in Turkey (1954) (8)
Cytogenetic analysis of wild emmer populations from Turkey and Israel (1975) (7)
Genetics of Maize-Tripsacum Introgression (1978) (7)
Registration of Texoka Buffalograss1 (Reg. No. 35) (1975) (7)
The Development of Buffalo Grass Seed1 (1946) (7)
Our Vanishing Genetic Resources (1975) (6)
Effect of Various Treatments in Breaking Seed Dormancy in Sand Lovegrass, Eragrostis trichodes (Nutt.) Wood 1 (1963) (6)
New Grasses for Old Ranges. (1951) (6)
Intergeneric Hybrids in the Bothriochloininae (1961) (6)
Production characteristics of Oklahoma forages. Native range. (1960) (4)
Stigma Removal Studies on Certain Accessions of Bothriochloa intermedia and Dichanthium annulatum 1 (1961) (4)
The Dynamics of Domestication (1992) (4)
Blue Grama Types from West Texas and Eastern New Mexico. (1958) (4)
Classification of Cultivated Plants (1992) (4)
Collecting Forage Plants in Turkey. (1950) (3)
Variation in levels of lipid components and protein in ecogeographic races of Sorghum bicolor (1976) (3)
Registration of Plains Bluestem1 (Reg. No. 4) (1973) (3)
Improving Old World bluestems for the South: Progress Report, 1960. (1960) (3)
Views on Agricultural Origins (1992) (3)
Woodward sand bluestem : origin, description, and adaptation. (1960) (3)
Cytogenetic evidence for the origin of teosinte (Zea mays ssp. Mexicana) (2004) (3)
HOW GREEN CAN A REVOLUTION BE (1977) (3)
A Cytogenetical Study of Intergeneric Hybrids Between Bothriochloa intermedia and Dichanthium fecundum (1962) (2)
Space, Time, and Variation (1992) (2)
General Editor s Preface (1976) (1)
What is a Weed (1992) (1)
NATURAL RESOURCES OF THE BÂB EDH-DHRÂʿ REGION (2003) (1)
Farming in Prehistory: From Hunter-Gatherer to Food-Producer. Barbara Bender (1977) (1)
Prologue: The Golden Age (1992) (1)
Crops, Weeds, and Revolution (1955) (1)
The Near East (1992) (0)
Book Review:Agricultural Plants. R. H. M. Langer, G. D. Hill (1983) (0)
Legume adaptation studies in North Central Oklahoma. (1961) (0)
Cytology of plants derived from 20 Zea and 18 Tripsacum chromosome hybrids backcrossed with maize. (1976) (0)
Epilogue: Who's in Charge Here? (1992) (0)
Controlled Double-Blind Evaluation of Antacids and Placebos in Peptic Ulcer Therapy. (1973) (0)
and Dispersal of Cultivated Plants (1973) (0)
The all american ice cream parlor (1997) (0)
Six traversal microtron using a superconducting linac (1973) (0)
Plant Science with a Grain of Salt (1983) (0)
Duodenoscopy in diagnosis of occult peptic ulcer disease. (1973) (0)
Book reviews (2004) (0)
6-pass microtron using a superconducting electron linac (1974) (0)
Detection of a new Sph I site in the rDNA repeat of tripsacoid maize (1984) (0)
The Far East (1992) (0)
Morphology and Combining Ability Studies of Maize Populations Recorvered From the Intergeneric Cross Zea X Tripsacum. (2000) (0)
Germination characteristics of some accessions of Bothriochloa ischaemum (L.) Keng. (1961) (0)
Book announcements (2004) (0)

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What Schools Are Affiliated With Jack Harlan?

Jack Harlan is affiliated with the following schools: