Changes in Grain Yield and Yield Attributes Due to Cultivar Development in Indica Inbred Rice in China
نویسندگان
چکیده
Inbred rice has been grown more and widely, while the planting area of hybrid decreased by approximately 25% in China since 1995. This study aimed to assess changes grain yield attributes due cultivar development indica (Oryza sativa ssp. indica) inbred China. Field experiments were conducted 2019 2020 determine performance an super Jinnongsimiao (JNSM) released 2010 comparing it with high-yielding Guichao 2 (GC2) 1978 Y-liangyou 900 (YLY900) 2016. Results showed that JNSM produced 18% higher than GC2 but 6% lower YLY900. Compared GC2, had spikelets per panicle, spikelet-filling percentage, harvest index 67%, 4%, 11%, respectively. YLY900, 14% weight 19% biomass production during pre-heading period. The difference period between YLY900 was explained crop growth rate duration. suggests (1) recently outyields old as a result increasing panicle size, index, (2) further improvement can be achieved improving through promoting growth.
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ژورنال
عنوان ژورنال: Agronomy
سال: 2022
ISSN: ['2156-3276', '0065-4663']
DOI: https://doi.org/10.3390/agronomy12102541