1889-1969 1896- 1957- 582 adaptation africa agriculturalbiotechnology aims american animal-plantrelationships authors bangladesh beachcombing biodiversity biodiversityconservation biotechnology california casestudies certification citizenparticipation cleaning climaticchanges climaticfactors coevolution collectionandpreservation congresses consumerprotection cooking corn cultivated democracyandeducation descriptionandtravel desertplants development diettherapy dispersal dormancy ecology economicaspects education encyclopedias ethnoscience europeanunioncountries evolution experiments familyfarms fiction flowerarrangement flowergardening flowers foodcrops frugivores fruit functionalfoods gardening gardens genebanks genes geneticengineering genetics germination germplasmresources germplasmresourcesconservation grandfathers grapefruit grapes growth handling harvesting healthaspects heffernan helen history homesandhaunts horticulturalproductsindustry human-plantrelationships identification juvenilefiction juvenileliterature landisvalley lawandlegislation mangel-wurzel marketing mice miscellanea mutualism(biology) naturalhistory newengland nurserystock nutrition nuts objectives patents pennsylvania pennsylvaniadutch physiology pictorialworks plant plantecology plantextracts plantgermplasmresources plantpropagation plantreproductionandpropagation plants plantvarieties politicalaspects popularworks processing progressiveeducation propagation protection pumpkin research rhizobium richard riskassessment riskmanagement seashoreecology seedindustryandtrade seedsupply seedtechnology semences standards storage sugarbeetseeds testing therapeuticuse transgenicplants travelhoran treecrops trees tropics vegetablegardening vegetableprocessing vegetables viability wb13k11e1973 weeds woodyplants