Awns are the important structures of inflorescence in many crops that belong to Poaceae family. In addition, they actively participate photosynthesis, transpiration, seed dispersal, and self-planting. The Elymus nutans Griseb. is an important, self-pollinated, allohexaploid (2n = 6x 42) perennial native forage grass Qinghai-Tibet Plateau shows variation awns length. However, changes anatomical ...

Pre-harvest sprouting (PHS) is one of the serious problems for wheat production, especially in rainy regions. Although seed dormancy is the most critical trait for PHS resistance, the control of heading time should also be considered to prevent seed maturation during unfavorable conditions. In addition, awning is known to enhance water absorption by the spike, causing PHS. In this study, we con...

Ratcheting surfaces are a common motif in nature and appear in plant awns and grasses. They are known to proffer selective advantages for seed dispersion and burial. In two simple model experiments, we show that these anisotropically toothed surfaces naturally serve as motion rectifiers and generically move in a unidirectional manner, when subjected to temporally and spatially symmetric excitat...

ALCAROIDES is a single-gene recessive mutation in Hordeum uulgare var. ‘Bonus having pleiotropic effects on plant development. A sac-like structure forms at the lemma awn base. and the leaves of calcaroides plants are occasionally twisted or curled, and acquires a brown mottled appearance after obtaining full maturity. In a previous publication (STEBBINS and PRICE 1971), evidence was presented ...

Arabic is a Semitic language spoken by millions of people in 20 different countries. However, not much work has been done in the field of online dictionaries or lexical resources. WordNet is an example of a lexical resource that has not been yet developed to its full extent for Arabic. WordNet, a lexical database developed by Professor George Miller and his team at Princeton University, has see...