On the characters of the Sylow -subgroups of untwisted Chevalley groups

Let$UY_{n}(q)$be a Sylow$p$-subgroup of an untwisted Chevalley group$Y_{n}(q)$of rank$n$defined over $\mathbb{F}_{q}$where$q$is a power of a prime$p$. We partition the set$\text{Irr}(UY_{n}(q))$of irreducible characters of$UY_{n}(q)$into families indexed by antichains of positive roots of the root system of type$Y_{n}$. We focus our attention on the families of characters of$UY_{n}(q)$which are indexed by antichains of length$1$. Then for each positive root$\unicode[STIX]{x1D6FC}$we establish a one-to-one correspondence between the minimal degree members of the family indexed by$\unicode[STIX]{x1D6FC}$and the linear characters of a certain subquotient$\overline{T}_{\unicode[STIX]{x1D6FC}}$of$UY_{n}(q)$. For$Y_{n}=A_{n}$our single root character construction recovers, among other things, the elementary supercharacters of these groups. Most importantly, though, this paper lays the groundwork for our classification of the elements of$\text{Irr}(UE_{i}(q))$,$6\leqslant i\leqslant 8$, and$\text{Irr}(UF_{4}(q))$.

INFLUENCE OF LIGHT ON IN VITRO ROOT CHARACTER FOR WOODY PLANT MICROCUTTINGS.

The structure and quality of the adventitious root system formed on a microcutting stem is crucial to the successful acclimation, survival, and ultimate performance of micropropagated plants. Despite increasing evidence that the rooting method impacts on the character of the framework root system, very little research has elucidated the consequences of standard rooting methods on plant quality and performance. Root initiation on microcuttings is handled by a wide range of strategies in commercial practice. In comparison to in vitro roots, ex vitro roots have smaller root diameters, larger vascular diameters, greater length, more branch root development, and root hairs. One important microenvironmental parameter - light - was investigated to determine its contribution to root character. Typically, in vitro root systems are exposed to light throughout the root initiation period. Parallel treatments were established of in vitro light and dark rooting and ex vitro rooting of four woody species. Regardless of light exposure, the overall diameter of adventitious roots was larger for in vitro treatments than the ex vitro treatment. Vascular development was significantly more advanced ex vitro. These results suggest that light is not a major influence contributing to the differences between ex vitro and in vitro root character.

The Religious Authorities in the Gospel of Mark

Within the story-world of Mark, the religious authorities — the scribes, Pharisees, Herodians, chief priests, elders, and Sadducees — form a united front opposed to Jesus61 and therefore constitute, literary-critically, a single, or collective, character. If Jesus is the protagonist, they are the antagonists, and both Jesus and they exhibit a ‘root character trait’, that is, a character trait from which all other traits spring. Thus, Jesus, as the Messiah Son of God, is characterized as ‘uniquely related’ to God. As such, he is endowed with divine authority and ‘thinks the things of God’, which is to say that he views reality from a divine perspective. In contrast, the religious authorities are characterized as being ‘without authority’, which is to say that they ‘think the things of men’ and view reality from a purely human perspective. Consequently, the conflict between Jesus and the authorities in Mark's story is an extended clash over ‘authority’. Instead of receiving Jesus as God's Messiah and Son, they oppose him throughout his ministry.

A STUDY OF THE DEGREE OF CREEPING ROOTEDNESS IN RELATION TO BREEDING INTERMEDIATE WHEATGRASS

Twenty clonal lines of intermediate wheatgrass, Agropyron intermedium (Host.) Beauv., were selected to represent the range in creep development to be found in a breeding nursery. Polycross progenies of these clonal lines were studied to determine the relationship of the degree of creeping rootedness of the 20 clones with the dry matter yield, basal ground cover, and winterkilling of their polycross progenies. This was done to determine the emphasis that should be placed on selecting for or against the creeping root character in a breeding program.No strong relationships between creep and the other characteristics were found on either dryland or irrigated land. However, there was some indication under irrigation that better initial stands were obtained with lines showing reduced creep and that these same lines were more subject to invasion by weeds in later years.It is apparent that the degree of creeping rootedness requires little consideration in breeding intermediate wheatgrass.