Inaug.-diss.--Giessen. / Lebenslauf. "Litteratur-verzeichnis": p. 55.

Inaug.-diss.--Leipzig. / Lebenslauf.

Inaug.-diss.--Leipzig. / Vita. "Literatur-verzeichnis": p. [46].

Thesis (Ph. D.)--University of Wisconsin--Madison, 1942. / Typescript. Includes abstract and vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 55-56).

No description available.

The influence of stages of development, soil types, dates of seeding, cultivars, and boron nutrition on glucosinolate composition and variation in rutabaga (Brassica napobrassica Mill.) and turnip (B, rapa L.) cultivars was studied by quantifying the glucosinolate hydrolysis products in these species. While in seeds of both species contents of goitrin and volatile isothiocyanates were inversely correlated, there was little variation in thiocyanate ion and total glucosinolate contents. Major synthesis or accumulation of different glucosinolates occurred at different times during the growing season in the sequence after seeding: indolyl glucosinolates yielding thiocyanate ion at the 2-week stage; glucosinolates yielding volatile isothiocyanate hydrolysis products at the 4-week stage; and progoitrin yielding goitrin at the 6- or 8-week stage. These glucosinolates were generally higher in roots of both species grown on organic soil than on loam soil. During ontogeny of both species, the content of volatile isothiocyanates generally were positively correlated with top/root ratio, while growth rate was positively correlated with thiocyanate ion content. While the contents of goitrin and volatile isothiocyanate tended to be higher in early-seeded (May 27) crops, the thiocyanate ion contents tended to be higher in late-seeded (June 21) crops. The occurrence of boron deficiency symptoms in roots of hydroponically-grown Snow Ball turnip (0.1 ppm boron treatment) was associated with an accumulation of high quantities of glucosinolates and reducing sugars.

Thesis (Ph. D.)--University of Kentucky,2004. / Title from document title page (viewed Oct. 12, 2004). Document formatted into pages; contains ix, 111 p. : ill. Includes abstract and vita. Includes bibliographical references (p. 97-110).

No description available.

Thesis (doctoral)--Swedish University of Agricultural Sciences, 2000. / Includes bibliographical references.

Made available in DSpace on 2014-06-11T19:30:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-03-22Bitstream added on 2014-06-13T20:00:30Z : No. of bitstreams: 1 oliveira_ssc_dr_botfca.pdf: 369796 bytes, checksum: 600442ef7e4d575dc0abe6a08fa3bede (MD5) / Devido à expansão da cultura do nabo-forrageiro para regiões com temperaturas mais elevadas é de importância o desenvolvimento de genótipos adaptadas a estes ambientes. Neste trabalho objetivou-se selecionar testes de avaliação da qualidade fisiológica de sementes nabo-forrageiro que estimam parâmetros genéticos visando a definição de estratégias de seleção de progênies adaptadas à germinação sob condições de temperaturas elevadas. Cem progênies de meio-irmãos de nabo-forrageiro foram submetidas ao teste de germinação (20 ºC), primeira contagem, classificação do vigor de plântulas, teste de envelhecimento acelerado (41 ºC 96 h-1), germinação e teste da primeira contagem a altas temperaturas (20-35 ºC e 25-40 ºC) e emergência de plântulas em condições de altas temperaturas de campo (22 a 37 ºC). O teste de primeira contagem, germinação, envelhecimento acelerado, primeira contagem e germinação sob alta temperatura de 20-35 °C podem ser utilizados para delinear estratégias de seleção de populações de nabo-forrageiro adaptados à germinação e emergência de plântulas em campo sob altas temperaturas / Due to the expansion of the culture of the turnip to regions with higher temperatures is important to develop cultivars adapted to heat. What this study was to estimate genetic parameters for the traits of seed physiological quality of turnip to outline strategies for selecting cultivars adapted to germination under high temperature conditions. Hundred of half-brothers of turnip were subjected to germination test (20 ºC), first count, classification of seedling vigor, accelerated aging test (41 ºC 96 h-1), germination and testing of the first count at high temperature (20-35 º C and 25-40 ºC) and seedling emergence in field in summer (22-37 ºC). The germination, first count, accelerated aging and germination and testing of the first count at high temperature 20-35 º C can be used for the selection of populations of wild radish seeking greater vigor and germination under high temperatures