[Relationship of some environmental factors to disorders in wheat ontogenesis as applied to space greenhouse].
In ground-based experiments reproducing conditions in experiments in the Mir greenhouse Svet super dwarf wheat was raised at water potential (WP) in root modules with pearlite within the range from -0.5 kPa to -3.0 kPa. At -2.0 kPa the number of florets in spikes, mainly the tiller ones, was considerably reduced and the actual spikes were fully barren. With WP equal to 0.5 kPa and -1.0 kPa, the grain component in the mass of a completely ripe shoot made up 46% and only 32% with WP at -2.0 kPa. With WP = 3.0 kPa, spikes of the main shoot and tillers were fully barren. In the WP range from 0.5 kPa to 1.0 kPa plants developed two tillers and no more than one tiller at 3.0 kPa. In the experiment with elevated air temperature mass of tillers at 1.0 kPa was by 39% lower as compared to the data from the experiment at the normal temperature. Degenerated anthers and abnormal pollen grains were again the cause of full barrenness of spikes grown at the normal temperature.
Smolianina
S O
SO
Berkovich
Iu A
IuA
Krivobok
N M
NM
Bol'shakova
L S
LS
D006813:Humidity; D018531:Spacecraft; D013696:Temperature; D014908:Triticum / Q000254:growth & development*