STEM MORPHOLOGY AND ANATOMY IN ZEA MAYS AS INFLUENCED BY CYTOPLASMIC MALE STERDLITY AND RESTORER GENES

1976 ◽  
Vol 56 (2) ◽  
pp. 249-255 ◽  
Author(s):  
PATRICIA SARVELLA ◽  
C. O. GROGAN
Keyword(s):  
Zea Mays ◽  
Histological Examination ◽  
Cross Sections ◽  
Vascular Bundle ◽  
Zea Mays L ◽  
Cell Number ◽  
Normal Male ◽  
Male Sterile ◽  
Restorer Genes

The stem morphology of three versions (normal, male-sterile, and restored) of five lines of corn (Zea mays L.) was examined. Corn stems in both the male-sterile (Texas cytoplasm) and restored versions of line Mp466 were shorter than the normal version. Stem diameters were less in the male-sterile version in two of the five lines examined. Histological examination of the three versions in line CI21 showed that vascular bundle radial diameters in cross sections were less in the male-sterile tassel culms than the normal. Reduction in the amount of phloem appeared to be the cause. Cells in longitudinal sections appeared to be about the same length in all versions, or shorter in the normal; therefore, shortening of the male-sterile stems apparently results from a reduction in cell number.

COMPARISON OF MORPHOLOGY OF LEAVES FROM NORMAL, CYTOPLASMIC MALE–STERILE AND RESTORED VERSIONS OF ZEA MAYS

1975 ◽  
Vol 17 (2) ◽  
pp. 167-171
Author(s):  
Patricia Sarvella ◽  
C. O. Grogan ◽  
D. L. Myhre
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Epidermal Cells ◽  
Leaf Thickness ◽  
Normal Male ◽  
Male Sterile ◽  
Morphological Variations ◽  
Cytoplasmic Male Sterile

Leaf thickness, number of trichomes, number and size of stomatal and epidermal cells were compared in normal, male-sterile, and restored versions of Zea mays L. Differences in leaf thickness were obtained between lines, but not between versions (except for one line). Differences in trichomes between versions were found in two of the five lines. Results from the length and width of stomatal and epidermal cells in the hybrid F44 × F6 were like those of the trichomes. Therefore, the large morphological variations between the internodes of normal, male-sterile, and restored versions of corn which were previously observed do not extend to the leaves.

Effects of nuclear restorer genes on the cytochrome content of corn pollen mitochondria

1976 ◽  
Vol 54 (23) ◽  
pp. 2718-2725 ◽  
Author(s):  
L. S. Watrud ◽  
J. R. Laughnan ◽  
S. J. Gabay ◽  
D. E. Koeppe
Keyword(s):  
Zea Mays ◽  
Cytochrome Oxidase ◽  
Zea Mays L ◽  
Pollen Grains ◽  
Inbred Lines ◽  
Difference Spectroscopy ◽  
Male Sterile ◽  
Restorer Genes ◽  
Male Sterile Cytoplasm ◽  
Cytochrome Content

Mitochondria were isolated from mature pollen grains of corn (Zea mays L.) having normal (N) or restored Texas male-sterile (TRf) cytoplasm. Comparison of the cytochrome content of the two sources by low-temperature difference spectroscopy indicates that inbred lines carrying nuclear restorer genes and T cytoplasm have an increased cytochrome oxidase content. A lower cytochrome oxidase concentration was found in mitochondria isolated from anthers of nonrestored Texas (cms-T) male-sterile cytoplasm corn than from those isolated from nonexserted anthers of N or TRf plants. Mitochondria in nonsporogenous tissue of cms-T anthers collected just before the time of anthesis of N plants had fewer well defined cristae than mitochondria in comparable anther tissue of N or TRf plants.

VARIATION IN THE DIFFERENTIAL LEAF ABSORPTION OF A HIGH-MOLECULAR-WEIGHT PHOSPHATE BY PLANTS OF DIFFERING CYTOPLASMS OF THREE CORN (ZEA MAYS) INBREDS

1975 ◽  
Vol 17 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Dirk Barèl ◽  
Peter A. Peterson
Keyword(s):  
Molecular Weight ◽  
Zea Mays ◽  
Membrane Permeability ◽  
High Molecular Weight ◽  
Zea Mays L ◽  
Male Sterile ◽  
Cytoplasmic Male Sterile ◽  
Rate Of Absorption

The absorption of foliarly applied tripolyphosphate is significantly greater in two different cytoplasmically male-sterile lines (Tcms and Ccms) of Zea mays L. than in isolines having normal (N) cytoplasm. A third cytoplasmic male-sterile (Scms) does not differ from the normal isoline in its absorption of foliarly applied tripolyphosphate. In none of the three comparisons of each of the cytoplasmic male-sterile lines and its normal isoline is there a difference in orthophosphate absorption, nor do any of the lines show a difference in the translocation of either source of phosphorus (P) inside the plant 10 days after application. The differential uptake of the large molecular P compound is not a property of all cytoplasmic male steriles, indicating that all cytoplasmic male steriles, do not have similar membrane permeability properties. Differences were found in the rate of absorption among lines for foliarly applied phosphates.

scholarly journals T-URF 13 Protein from Mitochondria of Texas Male-Sterile Maize (Zea mays L.)

1991 ◽  
Vol 95 (3) ◽  
pp. 861-870 ◽  
Author(s):  
Ethan Hack ◽  
Chentao Lin ◽  
Hongyun Yang ◽  
Harry T. Horner
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Male Sterile

scholarly journals Root Length and Vapour Pressure Deficit: Effect on Relative Water Content in Zea Mays L.

1971 ◽  
Vol 24 (3) ◽  
pp. 805 ◽  
Author(s):  
LA Downey ◽  
TC Mitchell
Keyword(s):  
Zea Mays ◽  
Water Content ◽  
Vapour Pressure ◽  
Root Length ◽  
Relative Water Content ◽  
Zea Mays L ◽  
Vapour Pressure Deficit ◽  
Personal Communication ◽  
Male Sterile ◽  
Relative Water

The pair of lodicules situated at the base of the ovary and adjacent to the lemma of the wheat floret have long been known to be involved in the opening of the wheat floret at anthesis (see Arber 1965). At anthesis, the lodicules swell and force the lemma away from the palea, allowing the stamens to grow out from the floret. Some minutes later and presumably in response to a stimulus associated with pollination (male-sterile florets may remain open for many hours: Dr. A. T. Pugsley, personal communication) the lodicules collapse and the floret closes. We are studying the events which lead to this rapid swelling and degeneration of the lodicule in wheat and noticed that information about the nature of the vascular tissues in lodicules is very meagre.

Amino Acids in Different Plant Parts of Normal and Male‐sterile Maize ( Zea mays L.) 1

Crop Science ◽  
1971 ◽  
Vol 11 (6) ◽  
pp. 805-807 ◽  
Author(s):  
Patricia Sarvella ◽  
C. O. Grogan ◽  
B. J. Stojanovic
Keyword(s):  
Amino Acids ◽  
Zea Mays ◽  
Zea Mays L ◽  
Male Sterile ◽  
Plant Parts
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