SynopsisThe average number of chloroplasts per guard cell was 11.8 ± 0.11 for tetraploid and 6.6 ± 0.11 for diploid inbred lines of sugar beets. These results indicated that diploids and tetraploids could be rapidly and accurately separated by counting chloroplasts in the guard cells.

The results reported in this paper did not show statistical differences in production of seeds, number of plants and number of ears when corn fertilizer (combination of Chilean nitrate, superphosphate and potassium chloride) was applied either in the sowing furrow or in lateral furrows (one or both side). The treatments with fertilizer were better than the treatment without fertilizer used for comparisons. Cotton seed meal, used in combination with superphosphate and potassium chloride, placed in the sowing furrow, reduces statistically the number of plants in the row when compared with the treatments where applications were made only in lateral furrows. However, this reduction of plants did not affect significantly the number of ears and the production in the treatments.

SynopsisFertilizing with nitrogen in addition to potassium and phosphorus generally increased the number of secondary corms and tertiary shoots of timothy plants, while the average weight of corms decreased. The number of secondary corms increased as the number of cuttings increased. Dead corms were numerous on plants that were cut frequently and also on plants cut to 1 inch or fertilized with high amounts of nitrogen.

The differences between different genetical materials as to the investigated characters have been large. The percentage of non-developed and fallen pods was on an average 21 and varied between 2 and 64. The mean percentage of non-developed and fallen pods was 5.5 and varied between 0 and 16 in the peas. The percentage of fully developed seeds was much smaller for the first ovule than for the central ones. The percentage of fully developed seeds was 70 in one material and the percentage of developed ovules (fully developed + defective seeds) in another material was 88.3. The corresponding percentages for the central seeds were 84 and 98.1, respectively, and for the last (outermost) seeds in the pods 82 and 91.1, respectively. The frequency of pods with only fully developed seeds was smaller for pods with a small number of seeds (ovules) per pod than for pods with a high number. The percentage of dead ovules was much higher for ovaries with a small number of ovules than for ovaries with a high number of ovules per ovary. The percentage of fully developed seeds showed a tendency to be higher for ovaries containing a large number of ovules than for ovaries containing a small number of ovules. Pod-setting percentage was much higher for the flowers with a low position (early) on the plant than for the flowers with a high position (late) on the stem. The difference was much larger than the corresponding one for the pea material. The length and breadth of the pods showed a tendency to be larger for low pods than for pods with a high position on the stem. Number of ovules per ovary showed a tendency to be higher for the lowest flowers than for the highest flowers. The difference was however much larger as to the fully developed seeds because the number of defective seeds was much higher for pods with a high position on the stem. Seed weight per pod was much larger for pods with a low position on the stem (early) than for pods with a high position on the stem (late). The mean seed weight showed about the same variation. Seed weight per pod for plants with a large number of pods per plant was smaller than for plants with a small number of pods per plant. The mean seed weight showed about the same variation. The number of fully developed seeds was somewhat larger for pods from nodes with two pods per node than for pods from nodes with only one pod per node. Seed weight per pod showed a tendency to be larger for pods from nodes with two pods per node than for pods from nodes with only one pod. Comparisons are in many cases made between vetches and peas, and, further, are the practical consequences of the obtained results discussed.

The differences between different genetical materials with regard to the investigated characters have been large. The percentage of fully developed seeds has been smallest for the first seed in the pods on an average (61.0) and much larger for the central seeds (95.2). The corresponding percentage for the last (outermost) seed in each pod was intermediate (82.7). Of the not fully developed seeds, about a fourth part was not at all developed and classified as dead ovules. The relations between the two groups, defective seeds and dead ovules, showed no influence on the position of the seed in the pod. The percentage of pods with all seeds fully developed varied between 14 and 60, and was much dependent on the number of ovules per ovary. The percentage of pod-setting was higher for the low nodes than for the higher ones. The number of ovules per ovary and number of fully developed seeds per pod showed a small tendency to be higher for the lower pods on the stem than for the pods with a high position on the stem. Peduncle length was clearly higher for the lower pods than for the pods with a high position on the stem. Seed weight per pod was considerably higher for pods with a low position on the stem (early flowering) than for pods with a high position on the stem (late flowering) . The length and breadth of the pods, number of ovules per ovary and number of fully developed seeds per pod have on an average been larger for pods from nodes with only one or two pods per node than for pods from nodes with three or more pods per node. The peduncle length was on an average higher for pods on nodes with two pods per node than for pods from nodes with only one pod per node or if the pod number per node was three or even higher. The seed weight per pod was on an average highest for pods developed from nodes with two pods per node and much smaller for pods developed from nodes with three or more pods per node. The seed weight per pod was intermediate for the pods springing from nodes with only one pod. The length of the pods, the breadth of the pods, number of ovules per ovary and number of fully developed seeds were higher for under pods than for over pods. The corresponding numbers for the single pods were lower than for both over and under pods. The peduncle length was considerably smaller for single pods than for over and under pods in the investigated material. Seed weight per pod was higher for under pods than for over pods and single pods.

SynopsisOne factor pair conditioned type of inflorescence. The gene for pedunculate was dominant over sub-sessile inflorescence. The symbols Se and se have been assigned to this factor pair. Inflorescence type segregated independently of flower color and growth type but was linked with maturity and height. Peduncle length, flower number per node, and percent flower shedding were inherited quantitatively with dominance and complementary gene effects toward long peduncles, high flower number, and high shedding.

SynopsisDefoliation caused reduction in all measures of yield. Severe, 8070, depodding reduced seed yield but increased weight per seed and stem yield. Moderate depodding, up to 40%, increased seed weight enough to maintain seed yield. Eighty percent depodding increased sugars, starch, and nitrogen in leaves and stems. Eighty percent defoliation increased the iodine number of seed oil, but decreased the oil and protein in seeds. Depodding increased seed protein but decreased the oil content and iodine number.

Lee Woolacott Memorial Number. Also published in the 77th Proceedings of the Royal Zoological Society of New South Wales (pp. 81-169). Copyright permission is on file with the IAMSLIC archive.