Claim · model-written summary
New wheat cultivars showed fewer spikes per square meter with annual genetic gain 0.35%.
Triticum aestivumVerbatim
e0“Newly released cultivars were characterized by early heading,reduced plant height,decrease of spikes per square meter,slight increase of kernels per spike,remarkable increase of thousand kernel weight and harvest index, with annual genetic gains of-0.10%,-0.70%,0.35%,-0.50%,0.63%,1.12%,and 0.79%,respectively.”
t0“Wheat Breeding”
Title
Genetic Gain of Wheat Breeding for Yield in Northern Winter Wheat Zone over 30 Years
He Zhong ACTA AGRONOMICA SINICA 2007
Other claims from this paper (12)
- Observation Annual wheat yield gain was 64.63 kg ha-1 year-1, or 1.20% per year.
- Observation The yield plateau breakthrough occurred with the Fengkang releases in 1980.
- Observation Fengkang 2 and Fengkang 8 were the first Beijing releases carrying 1B/1R and Rht-D1b.
- Observation Wheat yield genetic gain slowed after 1980.
- Observation New wheat cultivars showed earlier heading with annual genetic gain -0.10%.
- Observation New wheat cultivars showed reduced plant height with annual genetic gain -0.70%.
- Observation New wheat cultivars showed fewer kernels per spike with annual genetic gain -0.50%.
- Observation New wheat cultivars showed greater thousand kernel weight with annual genetic gain 0.63%.
- Observation New wheat cultivars showed higher harvest index with annual genetic gain 1.12%.
- Recommendation The authors recommend increasing kernels per spike by reducing sterile spikelets and florets.
- Recommendation The authors recommend increasing thousand kernel weight through faster grain filling.
- Recommendation The authors recommend combining greater grain weight per spike with more spikes per square meter.