Micropropagation of 'John Franklin' rose and its phosphorus uptake
نام عام مواد
[Thesis]
نام نخستين پديدآور
J. Abdulnour
نام ساير پديدآوران
N. N. Barthakur
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
McGill University (Canada)
تاریخ نشرو بخش و غیره
1993
مشخصات ظاهری
نام خاص و کميت اثر
79
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
M.Sc.
کسي که مدرک را اعطا کرده
McGill University (Canada)
امتياز متن
1993
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Nodal sections of the winter-hardy 'John Franklin' rose cultivar from field-grown plants were cultured on a modified Murashige and Skoog (MS) nutrient medium. Very high levels of contamination from the surface of the initial sections required that plants be grown under greenhouse conditions. Rose plantlets obtained from subsequent subcultures were used for the first time in a radiotracer experiment with P to study the kinetics of phosphorus (P) uptake as a function of temperature of the nutrient medium. P uptake increased with time for rooted and non-rooted plantlets in a linear fashion that did not reach an equilibrium value even after 96 hours of exposure. An analysis of variance revealed that the plantlets with roots absorbed significantly greater amounts of P at the 0.01 level compared with non-rooted plantlets at 22C. P uptake was significantly higher at the 0.05 level, for rooted versus non-rooted plantlets at 33C. There was no significant difference in P uptake by rooted and non-rooted plantlets at 3C. Interaction between time of exposures and rooting was found to be significant at 22C and 33C at the 0.01 level. The results indicated that the root system, previously thought to be inefficient in the nutrient absorption, played a key role in absorbing P from the nutrient medium at optimum temperature.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Biological sciences
موضوع مستند نشده
Botany
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )